324265 During the preparation of arene diazonium salts, the excess of nitrous acid, if any, is destroyed by adding

324266 $\text{Ca}{\text{C}}_{\text{2}}\underset{\text{ - Ca(OH}{\text{)}}_{\text{2}}}{\overset{\text{Hydrolysis}}{\to }}\text{A}\underset{\text{Fe tube}}{\overset{\text{Red}\text{hot}}{\to }}\text{B}$
$\underset{\text{50 - 6}{\text{0}}^{\text{o}}\text{C}}{\overset{\text{HN}{\text{O}}_{\text{3}}\text{ + }{\text{H}}_{\text{2}}\text{S}{\text{O}}_{\text{4}}}{\to }}\text{C}$
$\stackrel{\text{Fe + HCl}}{\to }\text{D}\stackrel{\text{NaN}{\text{O}}_{\text{2}}\text{ + HCl,}{\text{O}}^{\text{o}}\text{C}}{\to }\text{E}$
Then $\mathrm{E}$ is

324267 The product ' $\text{D}$ ' in the following sequence of reactions is:

324268 Complete reduction of benzene diazonium chloride with $\mathrm{Zn}/\mathrm{HCl}$ gives :

324265 During the preparation of arene diazonium salts, the excess of nitrous acid, if any, is destroyed by adding

324266 $\text{Ca}{\text{C}}_{\text{2}}\underset{\text{ - Ca(OH}{\text{)}}_{\text{2}}}{\overset{\text{Hydrolysis}}{\to }}\text{A}\underset{\text{Fe tube}}{\overset{\text{Red}\text{hot}}{\to }}\text{B}$
$\underset{\text{50 - 6}{\text{0}}^{\text{o}}\text{C}}{\overset{\text{HN}{\text{O}}_{\text{3}}\text{ + }{\text{H}}_{\text{2}}\text{S}{\text{O}}_{\text{4}}}{\to }}\text{C}$
$\stackrel{\text{Fe + HCl}}{\to }\text{D}\stackrel{\text{NaN}{\text{O}}_{\text{2}}\text{ + HCl,}{\text{O}}^{\text{o}}\text{C}}{\to }\text{E}$
Then $\mathrm{E}$ is

324267 The product ' $\text{D}$ ' in the following sequence of reactions is:

324268 Complete reduction of benzene diazonium chloride with $\mathrm{Zn}/\mathrm{HCl}$ gives :

324265 During the preparation of arene diazonium salts, the excess of nitrous acid, if any, is destroyed by adding

324266 $\text{Ca}{\text{C}}_{\text{2}}\underset{\text{ - Ca(OH}{\text{)}}_{\text{2}}}{\overset{\text{Hydrolysis}}{\to }}\text{A}\underset{\text{Fe tube}}{\overset{\text{Red}\text{hot}}{\to }}\text{B}$
$\underset{\text{50 - 6}{\text{0}}^{\text{o}}\text{C}}{\overset{\text{HN}{\text{O}}_{\text{3}}\text{ + }{\text{H}}_{\text{2}}\text{S}{\text{O}}_{\text{4}}}{\to }}\text{C}$
$\stackrel{\text{Fe + HCl}}{\to }\text{D}\stackrel{\text{NaN}{\text{O}}_{\text{2}}\text{ + HCl,}{\text{O}}^{\text{o}}\text{C}}{\to }\text{E}$
Then $\mathrm{E}$ is

324267 The product ' $\text{D}$ ' in the following sequence of reactions is:

324268 Complete reduction of benzene diazonium chloride with $\mathrm{Zn}/\mathrm{HCl}$ gives :

324265 During the preparation of arene diazonium salts, the excess of nitrous acid, if any, is destroyed by adding

324266 $\text{Ca}{\text{C}}_{\text{2}}\underset{\text{ - Ca(OH}{\text{)}}_{\text{2}}}{\overset{\text{Hydrolysis}}{\to }}\text{A}\underset{\text{Fe tube}}{\overset{\text{Red}\text{hot}}{\to }}\text{B}$
$\underset{\text{50 - 6}{\text{0}}^{\text{o}}\text{C}}{\overset{\text{HN}{\text{O}}_{\text{3}}\text{ + }{\text{H}}_{\text{2}}\text{S}{\text{O}}_{\text{4}}}{\to }}\text{C}$
$\stackrel{\text{Fe + HCl}}{\to }\text{D}\stackrel{\text{NaN}{\text{O}}_{\text{2}}\text{ + HCl,}{\text{O}}^{\text{o}}\text{C}}{\to }\text{E}$
Then $\mathrm{E}$ is

324267 The product ' $\text{D}$ ' in the following sequence of reactions is:

324268 Complete reduction of benzene diazonium chloride with $\mathrm{Zn}/\mathrm{HCl}$ gives :