At 298 K, the standard electrode potentials of Cu2+ / Cu, Zn2+ / Zn, Fe2+ / Fe and Ag+ / Ag are 0.34 V, $$-$$0.76 V, $$-$$0.44 V V and 0.80 V, respectively.
On the basis of standard electrode potential, predict which of the following reaction cannot occur?
Given below are two statements
Statement I : Primary aliphatic amines react with HNO2 to give unstable diazonium salts.
Statement II : Primary aromatic amines react with HNO2 to form diazonium salts which are stable even above 300 K.
In the light of the above statements, choose the most appropriate answer from the options given below.
In one molal solution that contains 0.5 mole of a solute, there is
RMgX + CO2 $$\mathrel{\mathop{\kern0pt\longrightarrow} \limits_{ether}^{dry}} $$ Y $$\buildrel {{H_3}{O^ + }} \over \longrightarrow $$ RCOOH
What is Y in the above reaction?