Chemistry HL – Page 6

M25-CHEM-HL-TZ2-P1A-Q40

Which equation represents propagation in a radical substitution mechanism?

What is the main reason why sulfuric acid has a lower pH than methanoic acid of the same concentration?

Which salt is basic?

What is the best indicator to use in the titration of phenylamine with nitric acid?

In which compound does sulfur have an oxidation state of +4?

Which solution has a pH of 9.0?

What is required to convert a base into its conjugate acid?

The following system is at equilibrium: \( 2SO_2(g) + O_2(g) \rightleftharpoons 2SO_3(g) \) with \( K = 4.3 \). What

What is the effect of doubling the pressure on the equilibrium? All other conditions remain unchanged. \( 2SO_2(g) + O_2(g)

Which changes increase the rate of the reaction? \( 2H_2O_2(aq) \rightarrow 2H_2O(l) + O_2(g) \) I. Introducing a catalyst II.