AP EAMCET · Chemistry · Solutions
Which of the following change decrease the vapour pressure of water kept in a sealed vessel?
- A Decreasing the quantity of water
- B Adding salt to water
- C Decreasing the volume of the vessel to one-half
- D Keeping the temperature of water constant
Answer & Solution
Correct Answer
(B) Adding salt to water
Step-by-step Solution
Detailed explanation
When salt (non-volatile solute) is added to water kept in a sealed vessel, boiling point of the solution will be elevated or increased. So, vapour pressure of water (solution) will be decreased. Lowering of vapour pressure \(\left(\Delta p=p^{\circ}-p\right)\) is also…
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