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Q. If saturated vapours are compressed slowly temperature remain constant to half the initial volume the vapour pressure will: a) become four times b) becomes double c)remain unchanged d) becomes half Sir, in this question I applied ideal gas equation since temperature is constant then on decreasing the volume to half should double the vapour pressure.But the correct answer is " vapour pressure remains unchanged?
If saturated vapours are compressed slowly (temperature remaining constant) to half the initial volume, the vapour pressure will remain unchanged as the vapour pressure cannot be increased due to saturation. vapour pressure is only affected by temperature