Question

In the ionic equation : $BiO _{3}^{-}+6 H ^{+}+ Xe ^{-} \longrightarrow Bi ^{3+}+3 H _{2} O$ the value of $X$ is -

• A. 3
• B. 4
• C. 2
• D. 6

Answer 1

Answer: (C)

2

Answer 2

The correct answer is C:2
${BiO3^{-} + 6H^{+} + xe^{-} -> Bi^{3+} + 3H2O}$
By electron neutrality principle,
$-1 + 6 + x (-1) = 3 + 0$
$\Rightarrow +5 + x(-1) = 3$
$\Rightarrow x = +2$