Dalton’s Law of Partial Pressure
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CHXI06:STATES OF MATTER

314130 A certain quantity of a gas occupies \(\mathrm{100 \mathrm{mL}}\) when collected over water at \(\mathrm{15^{\circ} \mathrm{C}}\) and \(\mathrm{750 \mathrm{~mm}}\) pressure. If it occupies \(\mathrm{91.9 \mathrm{mL}}\) in dry state at STP, the vapour pressure of water at \(\mathrm{15^{\circ} \mathrm{C}}\) is

1 \(\mathrm{12.8 \mathrm{~mm}}\)
2 \(\mathrm{14.8 \mathrm{~mm}}\)
3 \(\mathrm{13.2 \mathrm{~mm}}\)
4 \(\mathrm{13.7 \mathrm{~mm}}\)
CHXI06:STATES OF MATTER

314131 \(\mathrm{\mathrm{O}_{2}}\) and \(\mathrm{\mathrm{He}}\) are taken in equal weights in a vessel. The pressure exerted by Helium in the mixture is

1 \({\frac{{\rm{1}}}{{\rm{8}}}^{{\rm{th}}}}\) of total pressure
2 \({\frac{{\rm{1}}}{9}^{{\rm{th}}}}\) of total pressure
3 \({\frac{2}{9}^{{\rm{th}}}}\) of total pressure
4 \({\frac{8}{9}^{{\rm{th}}}}\) of total pressure
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CHXI06:STATES OF MATTER

314130 A certain quantity of a gas occupies \(\mathrm{100 \mathrm{mL}}\) when collected over water at \(\mathrm{15^{\circ} \mathrm{C}}\) and \(\mathrm{750 \mathrm{~mm}}\) pressure. If it occupies \(\mathrm{91.9 \mathrm{mL}}\) in dry state at STP, the vapour pressure of water at \(\mathrm{15^{\circ} \mathrm{C}}\) is

1 \(\mathrm{12.8 \mathrm{~mm}}\)
2 \(\mathrm{14.8 \mathrm{~mm}}\)
3 \(\mathrm{13.2 \mathrm{~mm}}\)
4 \(\mathrm{13.7 \mathrm{~mm}}\)
CHXI06:STATES OF MATTER

314131 \(\mathrm{\mathrm{O}_{2}}\) and \(\mathrm{\mathrm{He}}\) are taken in equal weights in a vessel. The pressure exerted by Helium in the mixture is

1 \({\frac{{\rm{1}}}{{\rm{8}}}^{{\rm{th}}}}\) of total pressure
2 \({\frac{{\rm{1}}}{9}^{{\rm{th}}}}\) of total pressure
3 \({\frac{2}{9}^{{\rm{th}}}}\) of total pressure
4 \({\frac{8}{9}^{{\rm{th}}}}\) of total pressure
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