138 grams of ethyl alcohol is mixed with 72 grams of water. The ratio of mole fraction of alcohol to water is
To an evacuated vessel with movable piston under external pressure of 1 atm., 0.1 mol of He and 1.0 mol of an unknown compound (vapour pressure 0.68 atm. at 0°C) are introduced. Considering the ideal gas behaviour, the total volume (in litre) of the gases at 0°C is close to |
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What are the conditions under which the relation between volume (V) and number of moles (n) of gas plotted? (P = pressure; T = temperature) |
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What is the dominant inter–molecular force or bond that must be overcome in converting liquid CH3OH to a gas? |
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A certain mass of a gas occupies a volume of 2 litres at STP. To what temperature the gas must be heated to double its volume, keeping the pressure constant? |
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When r, P and M represent rate of diffusion, pressure and molecular mass, respectively, then the ratio of the rates of diffusion (rA/rB) of two gases A and B, is given as |
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At 400 K, the root mean square (rms) speed of a gas X (molecular weight = 40) is equal to the most probable speed of gas Y at 60 K. The molecular weight of the gas Y is |
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In the equation of state of an ideal gas PV = nRT, the value of the universal gas constant would depend only on |
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If a gas expands at constant temperature, it indicates that: |
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A and B are ideal. The molecular weights of A and B are in the ratio of 1 : 4. The pressure of a gas mixture containing equal weights of A and B is P atm. What is the partial pressure (in atm) of B in the mixture? |
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Which of the given sets of temperature and pressure will cause a gas to exhibit the greatest deviation from ideal gas behaviour? |
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