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Advanced Higher Chemistry - Physical Chemistry

Authored by Lauren McElhinney

Science

6th Grade

Used 39+ times

Advanced Higher Chemistry - Physical Chemistry
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25 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of the following salts will form a solution with the lowest pH?

Potassium chloride

Potassium ethanoate

Ammonium chloride

Ammonium ethanoate

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of the following would not be suitable as a buffer solution?

Boric acid and sodium borate

Nitric acid and sodium nitrate

Benzoic acid and sodium benzoate

Propanoic acid and sodium propanoate

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The reaction 2SO2(g) + O2(g) ⇌ 2SO3(g) is reversible. After equilibrium has been established the reaction mixture was found to contain 0·2 moles of SO2, 0·2 moles of O2 and 16 moles of SO3. Which of the following is correct?

K > 1 and ∆G° > 0

K > 1 and ∆G° < 0

K < 1 and ∆G° > 0

K < 1 and ∆G° < 0

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

2X(g)    Y(g)      ∆H = −220 kJ mol−1

Which of the following changes will cause the equilibrium constant to increase?

Decrease in temperature

Increase in temperature

Decrease in pressure

Increase in pressure

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

HCN(aq) + H2O(ℓ) H3O+ (aq) + CN (aq)

In the above equation HCN(aq) is acting as

an acid

a conjugate acid

a base

a conjugate base

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Which of the equations shown represents the enthalpy of formation of a compound?

A

B

C

D

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The use of an indicator is not appropriate in titrations involving

hydrochloric acid solution and methylamine solution

nitric acid solution and potassium hydroxide solution

methanoic acid solution and ammonia solution

propanoic acid solution and sodium hydroxide solution.

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