Chemistry 0620 · IGCSE · Diffusion

Diffusion — practice question

The diffusion rates of three gases, ammonia, carbon dioxide and methane, are measured. In order from the slowest diffusion rate to the fastest diffusion rate, what is the sequence of the gases?

  • A$\text{CO}_2 \rightarrow \text{NH}_3 \rightarrow \text{CH}_4$
  • B$\text{CO}_2 \rightarrow \text{CH}_4 \rightarrow \text{NH}_3$
  • C$\text{CH}_4 \rightarrow \text{NH}_3 \rightarrow \text{CO}_2$
  • D$\text{NH}_3 \rightarrow \text{CH}_4 \rightarrow \text{CO}_2$

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