In the following reaction: 3Fe + 4H2O→ Fe3O4 + 4H2, if the atomic weight of iron is 56, then its equivalent weight will be

Question

In the following reaction: 3Fe + 4H2O→ Fe3O4 + 4H2, if the atomic weight of iron is 56, then its equivalent weight will be (A) 42 (B) 21 (C) 63 (D) 84

Tardigrade Admin · Accepted Answer

3Fe+4H2O→ Fe3O4+4H2 3Fe+4H2O→ Fe3O4+8H++8e- V.F. of Fe=(8/3) EFe=( textAtomic mass/V.F) = (56/8/3)=21

Q. In the following reaction:
$3 F e + 4 H_{2} O \to F e_{3} O_{4} + 4 H_{2},$ if the atomic weight of iron is $56$ , then its equivalent weight will be

$42$

$21$

$63$

$84$

$3 F e + 4 H_{2} O \to F e_{3} O_{4} + 4 H_{2}$
$3 F e + 4 H_{2} O \to F e_{3} O_{4} + 8 H^{+} + 8 e^{-}$
$V . F .$ of $F e = \frac{8}{3}$
$E_{F e} = \frac{Atomic mass}{V . F} = \frac{56}{8/3} = 21$

Q. In the following reaction: 3Fe+4H2​O→Fe3​O4​+4H2​, if the atomic weight of iron is 56, then its equivalent weight will be

42

21

63

84