MCQ
Zinc corrodes in ____________________.
- A2M alkaline solution.
- B2M acid solution.
- C2M neutral salt solution.
- Dall of the above.
Explanation:
Corrosion requires an acidic medium. Hence zinc corrodes in 2M acid solution.
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$A\xrightarrow{NaN{{O}_{2}}/HCl}B\xrightarrow{KCN}C\xrightarrow{{{H}_{3}}{{O}^{+}}}$ benzoic acid
The compound $ A$ is

${A_{\left( s \right)}} + {B^ \oplus } \longrightarrow {A^ \oplus } + {B_{\left( s \right)}}\,;\,\Delta {H^o} = - 551.5\,KJ$ Calculate standard electrode potential of cell (in $volt$). .......... $\mathrm{volt}$