5.2 Reversible reactions and equilibria

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Question 8

A sealed container holds an equilibrium mixture of nitrogen, hydrogen and ammonia at constant temperature.

Some of the ammonia molecules are swapped for the same number of ammonia molecules made with the heavier isotope nitrogen-15, $15NH3\mathrm{^{15}NH_{3}}$ , so the amount of each substance is unchanged. Nitrogen-15 reacts in exactly the same way as nitrogen-14.

After some time, which is observed?

[1]

$15N\mathrm{^{15}N}$ is found only in the ammonia, and the amount of ammonia is unchanged

$15N\mathrm{^{15}N}$ is found in the nitrogen and the ammonia, and the amount of ammonia is unchanged

$15N\mathrm{^{15}N}$ is found in the nitrogen and the ammonia, and the amount of ammonia has fallen

$15N\mathrm{^{15}N}$ is found only in the nitrogen, and the amount of ammonia has fallen

A sealed container holds an equilibrium mixture of nitrogen, hydrogen and ammonia at constant temperature.

After some time, which is observed?

$15N\mathrm{^{15}N}$ is found only in the ammonia, and the amount of ammonia is unchanged

$15N\mathrm{^{15}N}$ is found in the nitrogen and the ammonia, and the amount of ammonia is unchanged

$15N\mathrm{^{15}N}$ is found in the nitrogen and the ammonia, and the amount of ammonia has fallen

$15N\mathrm{^{15}N}$ is found only in the nitrogen, and the amount of ammonia has fallen

5.2 Reversible reactions and equilibria

Question 8

Markscheme

5.2 Reversible reactions and equilibria

Question 8

Markscheme

5.2 Reversible reactions and equilibria

Question 8

5.2 Reversible reactions and equilibria Questions

5.2 Reversible reactions and equilibria

Question 8

5.2 Reversible reactions and equilibria Questions