- A

- B

- ✓

- D






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$(a)$ The $pH$ of a mixture containing $400\, mL$ of $0.1\, M\, H_2SO_4$ and $400\, mL$ of $0.1\, M\, NaOH$ will be approximately $1.3$.
$(b)$ Ionic product of water is temperature dependent.
$(c)$ A monobasic acid with $K_a = 10^{-5}$ has a $pH = 5$. the degree of dissociation of this acid is $50\%$.
$(d)$ The Le Chatelier’s principle is not applicable to common-ion effect.
The correct statements are:

$N{O_{\left( g \right)}} + \frac{1}{2}{O_2}_{\left( g \right)} \rightleftharpoons N{O_2}_{\left( g \right)}$
Given : $\Delta G^o_f (NO_2) = 52.0\, KJ/mole$
$\Delta G^o_f (NO) = 87.0\, KJ/mole$
$\Delta G^o_f (O_2) = 0\, KJ/mole$