Is it correct to say that 'x' litres of a gas were produced in a reaction, calculating x using the ideal gas equation, since the volume occupied by a gas is taken to be the volume of the container it is in?

  • $\begingroup$ They usually say "$x$ liters of a gas was produced at STP". At STP, the temperature and pressure are fixed, so the volume depends on the amount of gas produced. $\endgroup$ – Pritt Balagopal Jun 17 '17 at 2:42
  • $\begingroup$ But isn't the volume taken to be the volume of the container, which is constant throughout? $\endgroup$ – User Jun 17 '17 at 3:46
  • 2
    $\begingroup$ Not if you keep a fixed pressure. Think of pistons that exert constant pressure. More gas means the piston expands more. $\endgroup$ – Pritt Balagopal Jun 17 '17 at 6:50

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