Question

Which of the following change will decrease the
vapour pressure of the 0.1 m aqueous solution of
AgNO3?
Addition of water
Addition of 0.2 m molat AgNO3
Addition of 0.1 molat AgNO3
Addition of 0.01 molal AgNO3​

Answer 1

Answer:

Agnus 500 on helium based quantities

Explanation:

water will have osmitical fitness composition

Answer 2

The change that will decrease the  vapour pressure of the 0.1 m aqueous solution of  AgNO3 is:

(2) Addition of 0.2 m molal AgNO3

- Vapour pressure depends upon the mole fraction.

- Here, AgNO3 is a non-volatile substance, so it has no vapour pressure.

- The vapour pressure of the solution is only due to water vapours.

- When we add more 0.2 m molal AgNO3, then its mole fraction will increase.

- On the other hand, the mole fraction of water will decrease.

- As a result, the vapour pressure will be decreased.