The correct order of basic strength in aqueous solution for the bases , , , and is:

Question

The correct order of basic strength in aqueous solution for the bases , , ,  and  is:

Canvas Classes · Accepted Answer

Step 1 — Hydrazine vs ammonia

: the  group exerts  effect on the other N → weaker base than .

Step 2 — Ethylamines in aqueous solution

In aqueous solution, basic strength depends on inductive effect AND solvation:

- : 2 ethyl groups (induction) + good solvation → highest
- : 1 ethyl group + good solvation → second
- : 3 ethyl groups (induction) but poor solvation (steric) → lower than expected
- : no alkyl groups → lowest among amines

Step 3 — Complete order:

→ Option (c)

Key Points to R

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