DP Chemistry (last assessment 2024)

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Question 21N.1.hl.TZ0.22

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Date November 2021 Marks available [Maximum mark: 1] Reference code 21N.1.hl.TZ0.22
Level hl Paper 1 Time zone TZ0
Command term Determine Question number 22 Adapted from N/A
22.
[Maximum mark: 1]
21N.1.hl.TZ0.22

A reversible reaction has a reaction quotient, Q, of 4.5 and equilibrium constant, Kc, of 6.2.

2A (g) ⇌ A2 (g)

Which statement describes the reaction at this time?


A.  The system has reached equilibrium.

B.  The rate of the forward reaction is greater than the rate of the reverse reaction.

C.  The concentration of reactant is greater than the concentration of product.

D.  At equilibrium, the concentration of reactant is greater than the concentration of product.

[1]

Markscheme

B

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