MCQ
“Relative lowering in vapour pressure of solution containing non-volatile solute is directly proportional to mole fraction of solute”. Above statement is
- AHenry law
- BDulong and Petit law
- ✓Raoult's law
- DLe-Chatelier's principle
Raoult's Law
-From Raoult's law we see clearly that the amount of change in the vapor pressure is dependent on the amount of the nonvolatile solute added to the solution (mole fraction) not the quality of the solute.
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Statement $I:$ The melting point of monocarboxylic acid with even number of carbon atoms is higher than that of with odd number of carbon atoms acid immediately below and above it in the series.
Statement $II :$ The solubility of monocarboxylic acids in water decreases with increase in molar mass.
Choose the most appropriate option
$1$ litre of mixture $X +$ excess of $AgNO_3 \to Y$
$1$ litre of mixture $X +$ excess of $Ba Cl_2 \to Z$
Number of moles of $Y$ and $Z$ respectively are
$I :$ form sets of compounds which display different oxidation states of the metal
$II :$ form coloured ions in solution
$III :$ burn vigorously in oxygen
$IV :$ act as catalyst