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3. The r.m.s velocity of hydrogen gas molecules at N.T.P. is v m/se. the gas is heated at constant volume till the pressure becomes 4 times. The final r.m.s. velocity is,(A) v/2 |
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Answer» The rms velocity of hydrogen gas molecules at N.T.P. is v m/s. The gas is heated at constant VOLUME till the pressure becomes 4 times.To FIND :Final rms velocity of the gas.Solution :Let initial pressure of the gas be P.ATQ, final pressure will be 4P.❖ RMS velocity of the gas at temperature T is GIVEN byM denotes molar mass of the gasHere volume of the gas and molar mass remain constant so we can say that➙ v₁ / v₂ = √P₁ / √P₂➙ v / v₂ = √P / √4P➙ v₂ = √4 × v➙ v₂ = 2vKnowledge BoosteR :At high temperature or low pressure the molecules of gas are far apart and molecular interactions are negligible, without interactions the gas behaves as an ideal gas.Avogrado hypothesis the equality of molecules in EQUAL VOLUMES of gas at a fixed temperature and pressure. |
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