Chemistry 9701 · AS & A Level · States of matter

States of matter — practice question

X, Y and Z are all gases that behave ideally and react according to the equation shown. $\text{X(g)} + 2\text{Y(g)} \rightarrow 2\text{Z(g)}$ If $3.0\,\text{mol}$ of X and $3.0\,\text{mol}$ of Y are put into a container of volume $1.0\,\text{dm}^3$, they react to produce the maximum possible amount of Z. The final temperature of the reaction vessel is $120\,^{\circ}\text{C}$. What pressure is finally present in the reaction vessel?

  • A$4.49 \times 10^6\,\text{Pa}$
  • B$9.80 \times 10^6\,\text{Pa}$
  • C$1.47 \times 10^7\,\text{Pa}$
  • D$1.96 \times 10^7\,\text{Pa}$

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