DP Chemistry (last assessment 2024)

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Question 17N.3.sl.TZ0.a

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Date November 2017 Marks available [Maximum mark: 1] Reference code 17N.3.sl.TZ0.a
Level sl Paper 3 Time zone TZ0
Command term Sketch Question number a Adapted from N/A
a.
[Maximum mark: 1]
17N.3.sl.TZ0.a

A student set up a simple voltaic cell consisting of a copper electrode and a zinc electrode dipped in sodium chloride solution.

The student gradually increased the distance, d, between the electrodes to study the effect on the initial current, I, passing through the light bulb.

The student hypothesized that the initial current would be inversely proportional to the distance between the electrodes.

Sketch a graph that would support the student’s hypothesis.

[1]

Markscheme

OR

OR

Correct labels of axes required for mark.

Accept d–1 instead of  1 d .

Accept I–1 instead of 1 I .

Plot of I vs d should not be linear.

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