MCQ
Which mixture forms a buffer when dissolved in $1\, lit$. of water
- A$0.2\, mol\, NaOH$ and $0.2\, mol\, HBr$
- B$0.2\, mol\, NaCl$ and $0.3\, mol\, HCl$
- ✓$0.4\, mol\, HNO_2$ and $0.2\, mol\, NaOH$
- D$0.5\, mol\, NH_3$ and $0.5\, mol\, HCl$
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$2NO_{(g)} + O_{2(g)} \rightleftharpoons 2NO_{2(g)}$
What is $K$ for the reaction,
$NO_{2(g)} \rightleftharpoons \frac{1}{2} N_{2(g)} + O_{2(g)}$
| List $I$ Oxide | List $II$ Type of Bond |
| $A$ $N _2 O _4$ | $I$. $1 N = O$ bond |
| $B$ $NO _2$ | $II$. $1 N - O - N$ bond |
| $C$ $N _2 O _5$ | $III$. $1 N - N$ bond |
| $D$ $N _2 O$ | $IV$. $1 N = N / N \equiv N$ bond |
Choose the correct answer from the options given below:
$(I)$ ${P_4} + S{O_2}C{l_2} \to $
$(II)$ ${P_4} + SOC{l_2} \to $
$(III)$ $PC{l_5} + S{O_2} \to $
$(IV)$ $PC{l_5} + {C_2}{H_5}OH \to $