TS EAMCET · Chemistry · Solutions
\(X\) is a non-volatile solute and \(Y\) is a volatile solvent. The following vapour pressures are observed by dissolving \(X\) in \(Y\).
The correct order of vapour pressures is
- A \(p_1 < p_2 < p_3\)
- B \(p_3 < p_2 < p_1\)
- C \(p_3 < p_1 < p_2\)
- D \(p_2 < p_1 < p_3\)
Answer & Solution
Correct Answer
(D) \(p_2 < p_1 < p_3\)
Step-by-step Solution
Detailed explanation
When a non-volatile solute is added to a volatile solvent, the solute covers up some of the surface of solvent. Thus, less surface area is available for vaporisation of solvent and hence, vapour pressure decreases. As the amount of non-volatile solute increases, vapour pressure…
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