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The general formula C(n)H(2n-2)O(3) is v...

The general formula `C_(n)H_(2n-2)O_(3)` is valid for

A

(1) alkanamides

B

(2) Alkanamines

C

(3) alkane carboxylic acids

D

(4) Alkanoic anhydrides

Text Solution

Verified by Experts

The correct Answer is:
D
The functional group of anhydrides contains `3` oxygen atoms: `underset("Acetic anhydride")(CH_(3)-overset(O)overset(||)C-O-overset(O)overset(||)C-CH_(3))`
The general formula for alkanamides is `C_(n)H_(2n+1)NO`(e.g., acetamide, `CH_(3)CONH_(2))`. The general formula for alkanamines is `C_(n)H_(2n+3)N` (e.g., methylamine, `CH_(3)NH_(2)`). The general formula for carboxylic acids is `C_(n)H_(2n)O_(2)` (e.g., acetic acid, `CH_(3)COOH`).
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