DP Chemistry (last assessment 2024)

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Question 19M.2.hl.TZ1.6f(i)

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Date May 2019 Marks available [Maximum mark: 1] Reference code 19M.2.hl.TZ1.6f(i)
Level hl Paper 2 Time zone TZ1
Command term Calculate Question number f(i) Adapted from N/A
f(i).
[Maximum mark: 1]
19M.2.hl.TZ1.6f(i)

This question is about iron.

(f(i))

Calculate the standard electrode potential, in V, when the Fe2+ (aq) | Fe (s) and Cu2+ (aq) | Cu (s) standard half-cells are connected at 298 K. Use section 24 of the data booklet.

[1]

Markscheme

«Eθ = +0.34 V −(−0.45 V) = +»0.79 «V»   [✔]

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Only 50 % of candidates earned this relatively easy mark on calculate EMF from 2 half-cell electrode potentials.

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