DP Chemistry (first assessment 2025)

Test builder »

Question 21M.1A.HL.TZ1.30

Date	May 2021	Marks available	[Maximum mark: 1]	Reference code	21M.1A.HL.TZ1.30
Level	HL	Paper	1A	Time zone	TZ1
Command term	Deduce	Question number	30	Adapted from	N/A

30.

[Maximum mark: 1]

21M.1A.HL.TZ1.30

Which gives the equation and cell potential of the spontaneous reaction?

[1]

Markscheme

D

Syllabus sections

Reactivity 3. What are the mechanisms of chemical change? » Reactivity 3.2—Electron transfer reactions » Reactivity 3.2.13—Standard cell potential, E⦵cell, can be calculated from standard electrode potentials. E⦵cell has a positive value for a spontaneous reaction. Predict whether a reaction is spontaneous in the forward or reverse direction from E⦵ data.