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adell [148]
3 years ago
14

Addition of 12 M (concentrated) HCl to saturated NaCl results in precipitation of NaCl. Yet when 1 M HCl is added to the same Na

Cl solution, no precipitate forms. Explain.
Chemistry
1 answer:
Marina86 [1]3 years ago
6 0

Answer:

When we add 12M HCl, reaction quotient Qsp becomes greater than Ksp of NaCl leading to precipitation

Explanation:

When sodium chloride is dissolved in water, the equilibrium dissolution process known as Ksp is set up as typified by the equation;

NaCl(s)------> Na^+(aq) + Cl^-(aq)

According to Le Chatelier's principle, this system will remain in equilibrium after the addition of the 1M HCl. This explains why there will not be any change in the system after adding this solution.

However, addition of 12 M HCl will significantly distort the equilibrium position since there is now more Cl^- ion in the system. The system now seeks to relieve this stress by recrystallizing more sodium chloride leading to the formation of a precipitate. Succinctly put, when we add the 12M HCl, the reaction quotient Qsp becomes greater than Ksp of NaCl leading to precipitation of NaCl crystals.

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What is the volume of 6.40 grams of O₂ gas at STP?
gtnhenbr [62]

The volume of 6.40 grams of O₂ gas at STP is 4.48L (option A). Details about volume can be found below.

<h3>How to calculate volume?</h3>

The volume of a gas can be calculated using the following formula:

p = m/v

Where;

  • p = density
  • m = mass
  • v = volume

According to this question, the mass of O₂ gas at STP is 6.40 grams. The density of the gas at STP is 1.43 g/L.

1.43g/L = 6.4g/V

Volume of O2 = 6.4 ÷ 1.43 = 4.48L

Therefore, the volume of 6.40 grams of O₂ gas at STP is 4.48L.

Learn more about volume at: brainly.com/question/1578538

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7 0
2 years ago
A rigid container of gas has a pressure of 1.72 atm and temperature of 21 oC. If the temperature increases to 85 oC, what is the
Vinil7 [7]

Answer:

the new pressure is 2.09 atm

Explanation:

you have to use gay lussac's law so the formula is

p1/t1 = p2/t2

and convert C to Kelvin k=C+273.15

1.72atm/294.15 = p2/358.15

solve for p2 by multiplying 358.15 on both sides

p2=2.09 atm

5 0
3 years ago
All animals make body heat. True or false?
gladu [14]

Answer:

False

Explanation:

Some animals are cold blooded

7 0
3 years ago
What is the correct answer?
Dominik [7]

Answer:

Bleach and seawater are identified wrong.

Explanation:

Acids have an pH that is lower than 7 and bases have a pH of higher than 7 and (pH 7 is neutral)

We can observe from the table that bleach has a pH of 13 which is higher than 7 and shows basic characteristics

As for seawater the table shows it has a pH of 8 which is also a base. Therefore the answer is 3rd option "Bleach and seawater should be identified as bases".

8 0
3 years ago
Which of these elements would form an ionic bond between them?
Pepsi [2]
C. Ca and Br because they're metals and nonmetals
6 0
3 years ago
Read 2 more answers
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