MCQ
Increasing the temperature of an aqueous solution will cause
- ADecrease in molality
- ✓Decrease in molarity
- CDecrease in mole fraction
- DDecrease in $ \% $ $w/w$
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(a) Water solubility is maximum at a $pH$ when concentrations of anions and cations are equal
(b) They give ninhydrin test
(c) On reacting with nitrous acid give off ${N_2}$
(Enthalpy of neutralisation $=57 \;kJ \;mol ^{-1}$ and Specific heat of water $=4.2\; JK ^{-1} g ^{-1}$ ) (Neglect heat capacity of flask)
