Question

Select the correct statement:

• A. $P H_{3}$ is reduces $A g N O_{3}$ to metallic Ag.
• B. Organic tissues turn $A g N O_{3}$ black by reducing it to $Ag$ .
• C. $AgCN$ is soluble in $KCN$ .
• D. All are correct statements.

Answer 1

Answer: (D)

$\left(\right.A\left.\right)$ $AgNO_{3}+PH_{3} \rightarrow Ag\downarrow HNO_{3}+H_{3}PO_{3}$

$\left(B\right)$ $\text{AgN}\left(\text{O}\right)_{3}\overset{O r g a n i c \, t i s s u e \left(p r o t i e n s\right)}{ \rightarrow }\text{Ag}\downarrow\left(\text{black}\right)$

(C) $\mathrm{Ag}^{+}+2 \mathrm{KCN} \rightarrow\left[\mathrm{Ag}(\mathrm{CN})_2\right]^{-}+2 \mathrm{~K}^{+}$