MCQ
The compound forms nitroso amines when the substituents are


- A${R_1} = C{H_3},\,{R_2} = {R_3} = H$
- B${R_1} = {R_2} = H,\,\,{R_3} = {C_2}{H_5}$
- ✓${R_1} = H,\,\,{R_2} = {R_3} = C{H_3}$
- D${R_1} = C{H_3},\,\,{R_2} = {C_2}{H_5},\,\,{R_3} = H$

Sec. amine reacts with Nitrous acid to form nitroso amine yellow liquid.
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$2{H_2}O \rightleftharpoons {H_3}{O^ + } + O{H^ - }$ ,
the value of $\Delta {G^o}$ at $298\,K$ is approximately .......$kJ\,mol^{-1}$