Question

send an explained solution of this question. Ch 1 matter in our surroundings. explain it in 50 words. pls fast

Answer 1

Answer:  A will have lower boiling point than B.

   The higher the vapour pressure P of the liquid, the lower the boiling point temperature Tb is.

   When we heat a liquid, some of it becomes vapour. So the vapour pressure just above liquid starts increasing.  The liquid starts boiling when the vapour pressure P above liquid surface becomes equal to the saturation pressure Ps (constant for that substance).  For example water starts boiling as soon as the vapour pressure reaches 1 atm (= Ps) at Tb = 100°C.

     So higher the vapour pressure P, the earlier it will reach Ps. Because the difference in Ps - P is lesser.  So earlier it boils. That means it will boil at a lower temperature T.

    That means its boiling point Tb will be lower than that of the other liquid.

Answer 2

it has low melting point than b