(a) Given chemical tests to distinguish between the following : (i) Benzoic and ethyl benzoate. (ii) Benzaldehy and acetophanone. (b) Complete each synthesis by giving missing regents or products in following. (i) (ii) `C_(6)H_(3)CHO overset(H_(2)NCONHNH_(2)) to ` (iii)

(a) Given chemical tests to distinguish between the following : (i) Be

1.	(a) Given chemical tests to distinguish between the following : (i) Benzoic and ethyl benzoate. (ii) Benzaldehy and acetophanone. (b) Complete each synthesis by giving missing regents or products in following. (i) (ii) `C_(6)H_(3)CHO overset(H_(2)NCONHNH_(2)) to ` (iii)
Answer» (a) (i) Benzoic acid and ethyl benzoate: These two componunds can be distinguished by the following tests: `to NaHCO_(3)` test: Benzoic acid being an acids prouduces brisk effervescene with `NaHCO_(3)` solution while ethylbenzote does not. `underset("Benzoic acid")(C_(6)H_(5)COOC_(2)H_(5))+ NaHCO_(3) to underset("Sod. formate")(C_(6)H_(5)COONa + CO_(2) uarr H_(2))` `to `Indoform test

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(i) Arrange the following compounds in an increasing order of basic strength : `C_(6)H_(5)NH_(2), C_(6)H_(5)N(CN_(3))_(2), (C_(2)H_(5))_(2)NH and CH_(3)NH_(2)` (ii) Arrange the following compounds in a decreasing order of `pK_(b)` values: `C_(2)H_(5)NH_(2), C_(6)H_(5)NHCH_(3), (C_(2)H_(5))_(2) NH and C_(6)H_(5)NH_(2)`
Rerrange the following in an increasing order of their basic strengths: `C_(6)H_(5)NH_(2),C_(6)H_(5)N(CH_(3))_(2),(C_(6)H_(5))_(2)` NH and `CH_(3)NH_(2)`.
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(a) Given chemical tests to distinguish between the following : (i) Benzoic and ethyl benzoate. (ii) Benzaldehy and acetophanone. (b) Complete each synthesis by giving missing regents or products in following. (i) (ii) `C_(6)H_(3)CHO overset(H_(2)NCONHNH_(2)) to ` (iii)

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