7.1 Determination of Rate of Reaction

Report 1 / 5

Which of the following is not the correct unit for the rate of reaction?

Difficulty Level: Medium

Report 2 / 5

The diagram shows the graph of concentration against time.

Which of the following are true regarding the graph?

I.		The concentration of reactant decreases and the concentration of product increases as the time increases

II.		The concentration of reactant increases and the concentration of product increases as the time increases

III.		The concentration of reactant is inversely proportional to the time

IV.		The concentration of the product is inversely proportional to the time

Difficulty Level: Medium

Report 3 / 5

Rate of reaction can be measured by measuring the observable changes.

Which of the following does not relate to measuring the observable changes?

Difficulty Level: Medium

Report 4 / 5

The table shows the volume of carbon dioxide gas collected for reaction between calcium carbonate and dilute hydrochloric acid.

Based on the table, calculate the average rate of reaction in the first one minute, in \(cm^3 s^{-1}\).

Difficulty Level: Easy

Report 5 / 5

In a chemical reaction, \(7.5\,\text{g}\) magnesium is added into excess hydrochloric acid and produced hydrogen gas.

It took 60 seconds for all the gas produced to be collected.

Calculate the average rate of reaction in \(\text{cm}^{3}\,\text{s}^{-1}\) .

(Relative atomic mass: Mg, 24; Molar volume: \(24\,\text{dm}^3\,\text{mol}^{-1}\) at room temperature)

\(Mg(s)+ 2HCl(aq) \rightarrow MgCl_2 (aq) + H_2(g)\)

Difficulty Level: Medium