Question

... Turkcell LTE 14:49 %22 Back Open in Safari Question 13 - Normal boiling point of Z (C) is 73° C. - Vapor pressure of Q (l) at 60° C is 820 mmHg. 1. Q is less volatile than Z. II. Z has a higher molar enthalpy of vaporization than Q. III. Q boils at a higher temperature than Z, at 1 atm. Which of the given statements is/are true? Your answer: O Only! Only 11 23 Home Courses Tasks Calendar Messages

Answer 1

boiling point is temperature at which vapour pressure becomes equal to atmospheric pressure .
First statement is wrong because Q is more valatile as its boiling point is low

ie its vapour pressure is above atmospheric pressure (760mmHg )at 60 c

whereas boiling point of Z is 73

second statement is correct as it required more heat to reach its boiling point

third statement is incorrect as we have seen that boiling point of Q is less than Z so Q boils at lower temp

so only second statement is corre