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A compound exists in the gaseous phase, both as a monomer A and a dimer A2. The atomic mass of A is 48, and the molecular mass of A2 is 96. In an experiment, 96 g of the compound was confined in a vessel of volume 33.6 litres, and heated to 273°C. The pressure developed, if the compound exists as dimer to the extent of 50% by weight under these conditions, will be

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Important Questions on States of Matter: Gases and Liquids

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Oxygen and cyclopropane at partial pressures of 570 torr and 170 torr, respectively, are mixed in a gas cylinder. What is the ratio of the number of moles of cyclopropane to the number of moles of oxygen?
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The partial pressure of hydrogen in a flask, containing two grams of hydrogen and 32 g of sulphur dioxide, is
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See the figure-1:

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The valves of X and Y are opened simultaneously. The white fumes of NH4Cl will first form at:

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The R.M.S. speed of the molecules of a gas of density 4 kg m-3 and pressure 1.2×105 N m-2 is:
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The mass of the molecule A is twice that of the molecule B. The root-mean-square velocity of the molecule A is twice that of the molecule B. If two containers of equal volumes have the same number of molecules, the ratio of the pressures PA/PB will be
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The average kinetic energy(in joules of) molecules in 8.0 g of methane at 27°C is :
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The temperature of an ideal gas is increased from 120 K to 480 K. If at 120 K, the root-mean-square velocity of the gas molecules is v, at 480 K, it becomes:
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The ratio between the r.m.s. velocity of H2 at 50 K and that of O2 at 800 K is: