Q.

An aqueous solution of  1m glucose is heated in an open vessel till the boiling point is reached. Thereafter, the boiling is continued and the temperature & the vapour pressure of the solution are recorded at 5min, 10min, and 15min. The corresponding temperatures and pressures are  T5,T10,T15 & p5,p10,p15,  respectively. The correct relationship among them is:

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a

T5<T10<T15&p5<p10<p15

b

T5=T10=T15&p5=p10=p15

c

T5=T10=T15&p5<p10<p15

d

T5<T10<T15&p5=p10=p15

answer is C.

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Detailed Solution

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When a solution containing a non-volatile solute is heated in a open vessel, the solution boils at a pressure equal to atmospheric pressure which remains constant. Due to increase in concentration of solution boiling point increases

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