Atomic weight of barium is 137.34. The equivalent weight of barium in BaCrO 4 used as an oxidizing agent in acid medium is

Question

Atomic weight of barium is 137.34. The equivalent weight of barium in BaCrO 4 used as an oxidizing agent in acid medium is (A) 137.34 (B) 45.78 (C) 114.45 (D) 68.67

Tardigrade Admin · Accepted Answer

CrO 42- (and not Ba 2+ ) is involved as an oxidizing agent and reduced to Cr 3+, hence, E w=(M w/3)

Q. Atomic weight of barium is $137.34$ . The equivalent weight of barium in $B a C r O_{4}$ used as an oxidizing agent in acid medium is

$137.34$

$45.78$

$114.45$

$68.67$

$C r O_{4}^{2 -}$ (and not $B a^{2 +}$ ) is involved as an oxidizing agent and reduced to $C r^{3 +}$ , hence, $Ew = \frac{Mw}{3}$

Q. Atomic weight of barium is 137.34. The equivalent weight of barium in BaCrO4​ used as an oxidizing agent in acid medium is

137.34

45.78

114.45

68.67