If M_1 and M_2 are mol. wt. of Al(OH)_3 and H_3PO_3, find their e… - Vidyadip

MCQ

If $M_1$ and $M_2$ are $mol. wt.$ of $Al(OH)_3$ and $H_3PO_3$, find their equivalent wt. in following reaction :

$Al{(OH)_3} + 2{H_3}P{O_3} \to Al(OH){({H_2}P{O_3})_2} + 2{H_2}O$

A
$\frac{M_1}{3},\frac{M_2}{3}$
B
$\frac{M_1}{3},\frac{M_2}{2}$
✓
$\frac{M_1}{2},\frac{M_2}{1}$
D
$\frac{M_1}{2},\frac{M_2}{2}$

✓

Answer

Correct option: C.

$\frac{M_1}{2},\frac{M_2}{1}$

c
$2\,'{\text{OH'}}$ replaced; Acidity $=2$

$\mathrm{E}_{\mathrm{Al}(\mathrm{OF})_{3}}=\frac{\mathrm{M}_{1}}{2}$

$1\,'{\text{OH'}}$ replaced, Basicity $=1$

$\mathrm{E}_{\mathrm{H_3} \mathrm{PO}_{3}}=\frac{\mathrm{M}_{2}}{1}$

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