A student electrolyses dilute sulfuric acid and measures the volume of hydrogen gas produced at the cathode over time.

The table below shows their results:

One of the results in the table is anomalous. State the time (in minutes) at which this anomalous result was recorded.

Using the remaining, non-anomalous data, calculate the rate of hydrogen gas production in $cm3/min\text{cm}^3/\text{min}$ .

Dilute copper(II) sulfate solution contains the following particles:

\text{H}^+ \quad \text{Cu}^{2+} \quad \text{OH}^- \quad \text{SO}_4^{2-} \quad \text{H}_2\text{O}

Which of these particles are attracted to the positive electrode (anode)?

Complete the following statements about the electrolysis of molten salts:

For molten potassium iodide ( $KI\text{KI}$ ), the product formed at the positive electrode (anode) is ______________.
For molten lead(II) bromide ( $PbBr2\text{PbBr}_2$ ), the product formed at the negative electrode (cathode) is ______________.