MCQ
The product B formed in the following reaction sequence is :


- A

- B

- C

- D







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Reason : Cuprous ion $(Cu^+)$ is colourless whereas cupric ion $(Cu^{2+})$ is blue in the aqueous solution.
${H_2}O(g){\mkern 1mu} {\mkern 1mu} + {\mkern 1mu} CO{\mkern 1mu} (g){\mkern 1mu} {\mkern 1mu} {\mkern 1mu} \rightleftharpoons \,{H_2}(g)\, + \,C{O_2}(g)\, + \,Heat{\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} $
$CH _{3} COOH + NaOH \rightarrow CH _{3} COONa + H _{2} O$ $(\Delta H =-55.3\,kJ\,mol ^{-1})$ The enthalpy of ionization of $CH _{3} COOH$ as calculated by the student is $kJ mol ^{-1}$. (nearest integer)
