6.2.1 Chemical Cell

The diagram shows a simple cell.

Which statement about the process occurring when the cell is in operation is correct?
 

The diagram shows a simple cell.

For which pair of metals would electrons flow from metal \(X\) to metal \(Y\) ?

\[
\begin{array}{l}
\begin{array}{|c|c|c|}
\hline & \text { X } & Y \\
\hline \text { A } & \text { copper } & \text { iron } \\
\text { B } & \text { copper } & \text { zinc } \\
\text { C } & \text { iron } & \text { zinc } \\
\text { D } & \text { zinc } & \text { iron } \\
\hline
\end{array}
\end{array}
\]

The diagram shows a simple cell.

Which pair of metals produces the largest voltage?

\[
\begin{array}{|c|c|c|}
\hline & \text { metal P } & \text { metal Q } \\
\hline \text { A } & \text { iron } & \text { copper } \\
\text { B } & \text { magnesium } & \text { copper } \\
\text { C } & \text { magnesium } & \text { zinc } \\
\text { D } & \text { zinc } & \text { copper } \\
\hline
\end{array}
\]

The reactivity series for a number of different metals is shown.
\[
\begin{array}{c c c}
\text { most reactive }  \longrightarrow   \text { least reactive }\\
\end{array}\]
\[\begin{array}{|c|c|c|c|c|c|}
\hline \text { magnesium } & \text { zinc } & \text { iron } & \text { copper } & \text { silver } & \text { platinum } \\
\hline
\end{array}
\]
The diagram shows different metal strips dipped into an electrolyte.

Which pair of metals produces the highest voltage?