Question 16The table shows the rate of reaction for two unknown time intervals during the course of a

Question

3.9 × 10−3

Which of the following is true for the two time intervals?

A. T1 is longer than T2, and the concentration of reactants at the end of T1 is higher than that of T2.

B. T1 is longer than T2, and the concentration of products at the end of T1 is higher than that of T2.

C. T1 is shorter than T2, and the concentration of reactants at the end of T1 is lower than that of T2.

D. T1 is shorter than T2, and the concentration of products at the end of T1 is lower than that of T2.

Question 17

Which type of substance ionizes completely and creates hydronium ions when dissolved in water?

A. Strong acid

B. Strong base

C. Weak acid

D. Weak base

Question 18

Which of the following is a property of water?

A. It has a relatively high heat capacity.

B. It freezes in a short time.

C. It exists in only the liquid state.

D. It repels other water molecules.

Question 19

Explain the impact that changing concentrations has on a system in a state of dynamic equilibrium. What will happen when reactants are added to a reversible reaction mixture at equilibrium?

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