In the reaction: Zn+ NaNO _ 3 +NaOH → Na _ 2 ZnO _ 2 +A+ H _ 2 O The sum of stoichiometric coefficients of Zn and A in the balanced reaction with simplest integer coefficient is

Correct answer: 5 Balanced reaction is cases 4Zn + NaN O _ 3 + 7NaOH → 4N a _ 2 Zn O _ 2 + & [N H _ 3 ] & + 2 H _ 2 O & [ A ] & cases The sum of stoichiometric coefficients of Zn and [A] = 4 + 1 = 5

NTA Abhyas 2020

Exam: NTA Abhyas
Year: 2020
Subject: Chemistry
Chapter: s Block Elements

NTA Abhyas 2020 · Chemistry · s Block Elements

In the reaction: Zn+ NaNO _ 3 +NaOH → Na _ 2 ZnO _ 2 +A+ H _ 2 O...

In the reaction:

\text{Zn}\text{+}{\text{NaNO}}_{3} \text{+}\text{NaOH} \to {\text{Na}}_{2} {\text{ZnO}}_{2} \text{+}\text{A}\text{+}{H}_{2} \text{O}

The sum of stoichiometric coefficients of

Zn

and

\text{A}

in the balanced reaction with simplest integer coefficient is

Correct answer

Step-by-step solution

Balanced reaction is

\begin{cases}4Zn + NaN{O}_{3} + 7NaOH \to 4N{a}_{2}Zn{O}_{2} + & \left[N{H}_{3}\right] & + 2{H}_{2}O \\ & [ A ] & \end{cases}

The sum of stoichiometric coefficients of

Zn and \left[A\right] = 4 + 1 = 5

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