In the following reaction: NO 3 ominus+ As 2 S 3+ H 2 O arrow AsO 43-+ NO + SO 42-+ H ⊕ The equivalent weight of As 2 S 3 (with molecular weight M ) is:

Question

In the following reaction: NO 3 ominus+ As 2 S 3+ H 2 O arrow AsO 43-+ NO + SO 42-+ H ⊕ The equivalent weight of As 2 S 3 (with molecular weight M ) is: (A) (3 M/28) (B) (M/4) (C) (M/24) (D) (M/28)

Tardigrade Admin · Accepted Answer

NO 3 ominus+ As 2 S 3 longrightarrow AsO 4 3-+ NO + SO 4 2- As 2 S 3+20 H 2 O longrightarrow 2 AsO 4 3-+3 SO 4 2-+40 H ⊕+28 e - E As 2 S 3=( M /28) (nfactor =28 ) (electrons lost/mol)

Q. In the following reaction :
$N O_{3}^{⊖} + A s_{2} S_{3} + H_{2} O \to A s O_{4}^{3 -} + NO + S O_{4}^{2 -} + H^{\oplus}$
The equivalent weight of $A s_{2} S_{3}$ (with molecular weight $M$ ) is:

$\frac{3 M}{28}$

$\frac{M}{4}$

$\frac{M}{24}$

$\frac{M}{28}$

$N O_{3}^{⊖} + A s_{2} S_{3} ⟶ A s O_{4}^{3 -} + NO + S O_{4}^{2 -}$
$A s_{2} S_{3} + 20 H_{2} O ⟶ 2 A s O_{4}^{3 -} + 3 S O_{4}^{2 -} + 40 H^{\oplus} + 28 e^{-}$
$E_{A s_{2} S_{3}} = \frac{M}{28}$ (nfactor $= 28$ ) (electrons lost/mol)

Q. In the following reaction : NO3⊖​+As2​S3​+H2​O→AsO43−​+NO+SO42−​+H⊕ The equivalent weight of As2​S3​ (with molecular weight M ) is:

283M​

4M​

24M​

28M​