Answers
Answer:
X is hydrochloric acid solution, Z is sodium chloride solution and Y is sodium hydroxide solution.
Explanation:
I will try be as detailed as possible.
Litmus paper:
-Short summary: Bases will turn blue and red litmus papers to blue and acids will turn blue and red litmus papers to pink while the pink will remain pink.(Simple Mnemonic: You can say B from base turns blue litmus blue and the others are the opposite).
-Also, neutral solutions will have not cause any color change on litmus papers. This is because litmus papers have a color change in the presence of H+ from acids and Oh- from bases. So, blue litmus paper remains blue and red litmus paper remains pink.
-Hydrochloric acid solution is a strong monoprotic acid because it fully dissociates to produces H+ ions. Therefore, in the presence of blue and pink litmus papers it will turn the blue to pink and the pink will remain pink.
-Sodium chloride solution is a neutral solution because it dissociates to Na+ and Cl- which do not play a role in the color change.
-Sodium hydroxide solution is a strong monoprotic base hence it fully dissociates to produce OH- no wonder the high pH value.
pH value:
-Acids have a pH value is <7 while pH of neutral solutions is 7 and basic solutions is >7.
-So from this analogy we can say that hydrochloric acid solution is 2,sodium chloride solution is 7 and sodium hydroxide solution is 10.
Universal indicator:
-A universal indicator gives a more precise data as compared to litmus because it not only identifies the type of the solution (acidic, basic or neutral) it also tells us the strength of the solution by comparing the color of the solution when the universal indicator is added against the pH universal indicator scale.
-Unfortunately ,the colors are quite a lot and I cannot type all of them but you could search for 'pH universal indicator scale' to clearly see the whole thing.
-In the scale, you can see that after addition of the universal indicator, sodium chloride solution neutral solutions (pH7) will give a green color, hydrochloric acid solution (pH=2) which is a strong acidic solution will give a red color and sodium hydroxide solution (pH=10) which is a strong base will give a blue solution.
Reaction with Magnesium:
-I'd like to recommend also that you search for 'metal reactivity' so that you can be able to see the trend .
-A highly reactive metal can displace a low reactive metal but a low reactive metal cannot displace a high reactive metal under normal conditions.
-So, for sodium hydroxide and sodium chloride solutions with magnesium ,magnesium cannot displace sodium because sodium is one of the most reactive metals therefore there will be no change.
-For hydrochloric acid solution, the reaction will take place because Magnesium is more reactive than hydrogen thus can be able to displace hydrogen ions and form Magnesium chloride solution.
~I hope this will help. All the best:)
Related Questions
How many mole of 88 gram of water
Answers
what conditions would produce the highest pressure?
Answers
air that is cooling will cause the highest pressure
Explanation:
This is because heat has to escape a certain area and if the heat can't escape then more and more pressure will build up in a area.
What is catalyst? Write its types.
Answers
Answer:
A catalyst is a chemical substance that alters the rate of chemical reaction not consumed by the reaction. Hence, a catalyst can be recovered chen unchanged at the ends of chemical reaction. Catalyst can be divided into two typ the basis whether it speeds up or slowdowns the rate of chemical reaction. The positive catalyst and negative catalyst.
Answer:
A catalyst is a chemical substance thatalters therate of chemical reactions not consumed by the reactions.
_____ Ca(NO3)2 + _____ Fe → _____ Fe(NO3)3 + _____ Ca I need this done quick and fast Balancing chemical equations
Answers
Answer:
3, 2, 2,3
..........................
How many molecules are there in 122 grams of NO2?
Answers
Answer:
1.47 × 10^(23)
Explanation:
In June, the most northern parts of earth get?
Answers
the greenhouse effect
Answers
The greenhouse effect refers to global warming as a consequence of the accumulation of greenhouse gases.
What are greenhouse gases?Greenhouse gases are different types of gaseous elements that trap solar radiation on the Earth's surface.
The most important greenhouse gases include, among others, methane and carbon dioxide (CO2).
In conclusion, the greenhouse effect refers to global warming as a consequence of the accumulation of greenhouse gases.
Learn more about greenhouse gases here:
https://brainly.com/question/20349818
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What process helps to purify water in nature?
Answers
Answer:
Filtration,Sedimentation and distillation
Explanation:
These 3 are physical processes which are commonly used in nature while in chemical processes,Chlorination is done to eliminate bacteria and other germs present
Happy 2 have helped in some way
helpppppp plzzzzzzzzz
Answers
Answer:
is this for rp
Explanation:
So I have an F in science, and everything is due today. Am I going to fail 9th grade because I didn't pass that class?
Answers
Answer:
i dk how ur school works, but you'll most likely have to take that science again to get the credits u need to graduate
Explanation:
the symbol of the eyes of symbol of shayambhunath stupa
Answers
Explanation:
The symbol of the eyes of syambhunath stupa refers to the eyes of gautam buddha also known as the eyes of wisdom. These eyes are prevalent throughout the country and have become a symbol of peace.
Plz mark me as brainlist
1. What did you notice about the distance between the atoms as the number of bonds increased? (Compare bond of H2S and H2O)
2. What is the relationship between atomic size and bond length for H2O / H2S and CO2 / CS2?
Answers
Answer:
Inverse relationship between number of covalent bonds and bond length.
Explanation:
There is inverse relationship between number of covalent bonds and bond length which means that if one increases the decreases or the one decreases the increases. When the number of covalent bonds between two atoms increases, the bond length decreases because there are more number of electrons present between the two nuclei, the two nuclei can get closer to each other until both nuclei experience their repulsive force of attraction. In bond of H2S has lower electronegativity value as compared to H2O so the bond length decreases due to attraction of shared pair of electrons by both nuclei.
The equivalence point for a strong acid – strong base titration will occur at:
pH < 7
pH = 7
pH > 7
pH = 14
Answers
I believe the ans is (2) pH = 7.
Explanation:
At the equivalence point, the salt of strong acid and strong base is completely hydrolyzed which gives a neutral solution with pH 7 as H+ ion concentration is equal to OH- ion concentration.
How many total atoms are in 1 mole of H2O?
Answers
Answer:
1.806 x 10^24 atoms total
Explanation:
PLEASE ANSWER ASAP!!!!!!! 50 points if the answer is correct!
Vinegar is sold as a 5.00% (v/v) solution of acetic acid. How many mL of water are in a 455-mL bottle of vinegar? Round your answer to 3 significant figures. Please answer in mL
Please please only answer if you are sure the answer is correct. thank you so much
Answers
5
mL acetic acid
95
mL water
Explanation:
Since
5
%
of the vinegar, by volume, is acetic acid, and we have
100
mL of vinegar, we have
5
mL of vinegar.
Similarly, we have
100
%
−
5
%
=
95
%
being water, so we have
95
mL of water.
How many moles are in 6.02 x 1023 particles of Carbon dioxide?
Answers
Answer:
There is one mole in 6.02*10^23 particles of anything ( also CO2)
find the zeros of the quadratic equation f(x)= 6x²-3, and verify the relation between its zeros and coefficients.
using the formula
alpha+beta= -b/a
alpha × beta = c/a
Answers
Answer:
Step-by-step explanation:
We are already given the following formulas :-
[tex]\blue{\alpha + \beta = \dfrac{-b}{a}}[/tex]
[tex]\red{\alpha \times \beta = \dfrac{c}{a}}[/tex]
Given that the polynomial is :-
[tex]\sf{6x^2 + 0x - 3}[/tex]
Now, we will use factorisation as our first weapon :-
6x² -3 = 0 [As we have to find the zeroes of the equation]
6x² = 3
x² = [tex]\dfrac{3}{6}[/tex]
x² = [tex]\dfrac{1}{2}[/tex]
x = [tex]\dfrac{1}{\sqrt{2}}[/tex]
Now, we can take one zero as 1/Root 2 and other -1/root 2
[tex]\dfrac{1}{\sqrt{2}} + \dfrac{-1}{\sqrt{2}} | \dfrac{0}{6} = 0[/tex]
0 |0 Hence verified.
[tex]\dfrac{1}{\sqrt{2}} \times \dfrac{-1}{\sqrt{2}} | \dfrac{-3}{6} = 0[/tex]
[tex]\dfrac{1}{2} | \dfrac{1}{2}[/tex]
Hence, proved.
Unit 7 CER
Using your knowledge of chemistry and the information below determine if the unknown compound is covalent or ionic.
CaCl2
*Make sure to write your answer using complete sentences.
*Make sure your answer has a claim whether it is ionic or covalent.
*Cite at least 1 piece of evidence and your knowledge of chemistry to back up your claim.
*The reasoning or conclusion behind your claim.
Answers
-- A scientist combines 14 grams of potassium nitrate with an unknown amount of
potasslum chloride. If the total mass of the products is 27.6 grams, what was the
mass of the potassium chloride?
Cada
Answers
Answer:
The unknown amount of potassium chloride is 13.6 grams.
Explanation:
The reaction of 14 grams of KNO₃ with KCl produces a total mass of 27.6 grams of the products.
The law of conservation of mass tells us that the total mass of the reactants must be the same that the total mass of the products. So, we can find the mass of KCl as follows:
[tex] m_{r} = m_{p} [/tex]
Where r is for reactants and p is for products
[tex] m_{KNO_{3}} + m_{KCl} = m_{p} [/tex]
[tex] 14 g + m_{KCl} = 27.6 g [/tex]
[tex] m_{KCl} = 27.6 g - 14 g = 13.6 g [/tex]
Therefore, the unknown amount of potassium chloride is 13.6 grams.
I hope it helps you!
How many grams are there in 7.40 moles of AgNO3?
Answers
Answer:
1257.03 grams
Explanation:
mass=mole*molar mass
mass=7.4*169.87= 1257.03
Let's say you are sanding a rough board to make shelves for you bedroom. What type of weathering would this be? How do you know?
Answers
Answer:
Physical or Mechanical weathering.
Explanation:
The sanding is a physical transformation of the rough board to make shelves for the bedroom and thus includes wear and tear of the wood in order to make the set. Hence the process includes grinding, polishing and smoothing the surface to make it usable.What is the molarity of a NaCl solution containing 9.0
moles of NaCl in 3.0 L of solution?
Answers
Answer:
3 M
Explanation:
Molarity equation: M = n/v
n = moles of solute
v = liters of solution
9 moles of NaCl / 3 L
9/3 = 3 M
help, please? will mark brainliest
Answers
Answer:
Sulfur would gain electrons
Explanation:
Atoms want to have a complete out valence shell and because sulfur only needs 2 more electrons to complete the outer shell it would take 2 more.
How is primary selection different from secondary succession?
Answers
Answer:
Explanation:
Primary and secondary succession occur after both human and natural events that cause drastic change in the makeup of an area. Primary succession occurs in areas where there is no soil and secondary succession occurs in areas where there is soil.
In primary succession, newly exposed or newly formed rock is colonized by living things for the first time. In secondary succession, an area previously occupied by living things is disturbed—disrupted—then recolonized following the disturbance.
Hope this helped :)
-Akito
I am so sorry to ask again but I suck at science and I rlly need help so could any one help me plzz and btw ty to jasminegomez18 for helping me with the other question I really appreciate thank you ! :)
Answers
Answer:
c) evaporating
d) has no salt in it
Explanation:
no problem anytime. just try to understand the concept and it will definitely help if you read the question more than once.
the change of state that is happening the surface of the sea water is evaporating. This is because it allows from liquid to vapour/ gas based on the diagram
the water in the test tube is different from sea water because it is pure meaning no salt. It's evident based on figure 2 because sea water is full of solutions and mixtures.
3CaCl2 + 2AlF3 --> 3CaF2 + 2AlCl3
How many moles of CaF2 will form from 36 moles of AlF3?
Answers
Answer:
54 moles
Explanation:
The ratio of AIF3 to CaF2 is, as seen in the equation, 2:3. This means you multiply 36 moles by 3, and then divide it by 2. This equals 54 moles of CaF2.
Define the term salt
Answers
Answer:
Salt is any neutral chemical compound made of cations (positive ions) attached to anions (negative ions). The main kind of salt is sodium chloride with the chemical formula NaCl. It is formed when hydrochloric acid is added in sodium hydroxide.
2Fe2O3 + 3C 4Fe + 300,
When 9.20 moles of carbon dioxide are produced from the reaction above, how many moles of Iron(III) Oxide must have been present before the reaction took place?
Answers
Answer:
3.1 moles of Iron(III) Oxide
Explanation:
The equation of the reduction of iron III oxide using carbon is shown;
Fe2O3 + 3CO → 2Fe + 3CO2
From the reaction equation;
1 mole of Iron(III) Oxide yielded 3 moles of carbon dioxide
x moles of Iron(III) Oxide will yield 9.20 moles of carbon dioxide
x = 9.2 moles * 1 mole/3 moles
x = 3.1 moles of Iron(III) Oxide
An unknown compound has the following chemical formula:
P4Sx
where x stands for a whole number.
Measurements also show that a certain sample of the unknown compound contains 2.9 mol of sulfur and 1.94 mol of phosphorus. Write the complete chemical formula for the unknown compound.
will give brainliest :]
Answers
Answer:
where the main questions of these assmesnt
Explanation:
On which of the following objects will the earth exert a greater gravitational pull than on a baseball?
A. A pencil
B. A person
C. A plastic bag
D. A cat
Answers
Answer:
b.
Explanation: brainliest