Chemical Kinetics and Solutions — Practice

Question 1

For a reaction rate = k[A][B]², the overall order and the units of k are

Accepted Answer

A

Question 2

Which statement is correct?

Accepted Answer

A

Question 3

A first-order reaction has a rate constant of 0.0693 s⁻¹. Its half-life is

Accepted Answer

A

Question 4

For a first-order reaction, the fraction of reactant remaining after 3 half-lives is

Accepted Answer

A

Question 5

In a first-order reaction, 75% of the reactant is consumed. The number of half-lives elapsed is

Accepted Answer

A

Question 6

A catalyst increases the reaction rate by

Accepted Answer

A

Question 7

The rate of a reaction typically ______ for every 10 °C rise in temperature

Accepted Answer

A

Question 8

The molality of a solution containing 0.5 mol of solute in 250 g of solvent is

Accepted Answer

A

Question 9

According to Henry's law, the solubility of a gas in a liquid, as temperature increases

Accepted Answer

A

Question 10

A solution of ethanol and water shows a higher vapour pressure than predicted by Raoult's law. This is

Accepted Answer

A

Question 11

The depression in freezing point of a solution of 0.1 mol of a non-electrolyte in 1 kg of water (Kf = 1.86 K kg mol⁻¹) is

Accepted Answer

A

Question 12

The depression in freezing point of 0.1 m NaCl (i = 2, Kf = 1.86) in water is

Accepted Answer

A

Question 13

The osmotic pressure of a 0.1 M solution at 300 K (R = 0.0821 L atm K⁻¹ mol⁻¹) is

Accepted Answer

A

Question 14

Which of the following is NOT a colligative property?

Accepted Answer

A

Question 15

Acetic acid dimerises in benzene. Its van't Hoff factor i is

Accepted Answer

A

Practice — Chemical Kinetics and Solutions