Question

Bottles containing ${C6H5I}$ and ${C6H5CH2I}$ lost their original labels. They were labelled A and B for testing. A and B were separately taken in test tubes and boiled with ${NaOH }$ solution. The end solution in each tube was made acidic with dilute ${HNO3}$ and then some ${AgNO3}$ solution was added. Substance B gave a yellow precipitate. Which one of the following statements is true for this experiment ?

• A. A and $\ce{C6H5CH2I}$
• B. B and $\ce{C6H5I}$
• C. Addition of $\ce{HNO3}$ was unnecessary
• D. A was $\ce{C6H5I}$

Answer 1

Answer: (D)

A was $\ce{C6H5I}$

Answer 2

${C6H5I ->[NaOH] C6H5ONa ->[HNO_3/H^{+}] \, C6H5OH ->[AgNO_3 ] No \, yellow \, ppt }$ ${C6H5CH2I ->[NaOH] C6H5CH2ONa ->[HNO_3/H^{+}] C_6H_5CH_2OH ->[AgNO_3] yellow \, ppt }$