From the given series of reactions- select the correct options-I NH 3- O 2- NO - H 2 O II NO - O 2- NO 2 III NO 2- H 2 O - HNO 3- HNO 2 IV HNO 2- HNO 3- NO - H 2 OA- Moles of HNO 3 obtained is half the number of moles of ammonia used if HNO 2 is not used to produce HNO 3 by reaction IVB- 100-6- more HNO 3 will be produced if HNO 2 is used to produce HNO 3 by reaction IV than if HNO 2 is not used to produce HNO 3 by reaction IVC- If HNO 2 is used to produce HNO 3 then 1-4 th of total HNO 3 is produced by reaction IVD- Moles of NO produced in reaction IV is 50 - of moles of total HNO 3 produced-

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Byju's Answer

Standard XII

Chemistry

Stoichiometric Calculations

From the give...

Question

From the given series of reactions, select the correct option(s):
$(I) N H_{3} + O_{2} \to N O + H_{2} O$
$(I I) N O + O_{2} \to N O_{2}$
$(I I I) N O_{2} + H_{2} O \to H N O_{3} + H N O_{2}$
$(I V) H N O_{2} \to H N O_{3} + N O + H_{2} O$

Moles of

H N O_{3}

obtained is half the number of moles of ammonia used if

H N O_{2}

is not used to produce

H N O_{3}

by reaction (IV)

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\frac{100}{6}

% more

H N O_{3}

will be produced if

H N O_{2}

is used to produce

H N O_{3}

by reaction (IV) than if

H N O_{2}

is not used to produce

H N O_{3}

by reaction (IV)

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H N O_{2}

is used to produce

H N O_{3}

then

\frac{1}{4}

th of total

H N O_{3}

is produced by reaction (IV)

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Moles of NO produced in reaction (IV) is 50% of moles of total

H N O_{3}

produced.

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Solution

The correct options are
A Moles of $H N O_{3}$ obtained is half the number of moles of ammonia used if $H N O_{2}$ is not used to produce $H N O_{3}$ by reaction (IV)
C If $H N O_{2}$ is used to produce $H N O_{3}$ then $\frac{1}{4}$ th of total $H N O_{3}$ is produced by reaction (IV)
D Moles of NO produced in reaction (IV) is 50% of moles of total $H N O_{3}$ produced.
The balanced chemical equations are:

$(I) 4 N H_{3} + 5 O_{2} \to 4 N O + 6 H_{2} O$
$(I I) 2 N O + O_{2} \to 2 N O_{2}$
$(I I I) 2 N O_{2} + H_{2} O \to H N O_{3} + H N O_{2}$
$(I V) 3 H N O_{2} \to H N O_{3} + 2 N O + H_{2} O$

Let the moles of $N H_{3}$ be $x$ moles.

$∴ moles of H N O_{3} in III reaction = x \times \frac{4}{4} \times \frac{2}{2} \times \frac{1}{2} = \frac{x}{2}$

$∴ moles of H N O_{3} in IV reaction = x \times \frac{4}{4} \times \frac{2}{2} \times \frac{1}{2} \times \frac{1}{3} = \frac{x}{6}$

$Moles of N O = x \times \frac{4}{4} \times \frac{2}{2} \times \frac{1}{2} \times \frac{2}{3} = \frac{x}{3}$

$Total moles of H N O_{3} = \frac{x}{2} + \frac{x}{6} = \frac{2 x}{3}$

$A)$ Moles of $H N O_{3}$ obtained in $I I I$ reaction if $H N O_{2}$ is not used to produce $H N O_{3}$ = $\frac{x}{2}$
$= \frac{N H_{3}}{2}$

$B)$ The amount of $H N O_{3}$ produced,
$= \frac{\frac{x}{6}}{\frac{x}{2}} \times 100$

$= \frac{100}{3}$ % of $H N O_{3}$ in $I V$ reaction.

$C)$ The amount of $H N O_{3}$ produced in $I V$ reaction,
$= \frac{\frac{x}{6}}{\frac{2 x}{3}} = \frac{1}{4}$ of the total amount of $H N O_{3}$ produced.

$D) \frac{moles of N O}{Total moles of H N O_{3}} \times 100 = \frac{\frac{x}{3}}{\frac{2 x}{3}} \times 100$

= 50 %

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Similar questions

Q. Given following series of reactions:
(I)

N H_{3} + O_{2} \to N O + H_{2} O

(II)

N O + O_{2} \to N O_{2}

(III)

N O_{2} + H_{2} O \to H N O_{3} + H N O_{2}

(IV)

N H O_{2} \to H N O_{3} + N O + H_{2} O

Select the correct option(s).

2 M

solution of

H N O_{3}

is reduced to

N O

by suitable reductant. The normality of

H N O_{3}

, if

H N O_{3}

is used like this, is :

Q. What is the change in oxidation number of nitrogen from

H N O_{2} t o H N O_{3}

in the following reaction? Ignore the other two products.

3 H N O_{2} \to H N O_{3} + 2 N O + H_{2} O

{A g N O}_{3} Δ - \to (W) + (X) + O_{2}

(X) + H_{2} O ⟶ H {N O}_{2} + H {N O}_{3}

(W) + H {N O}_{3} ⟶ Y + N O + H_{2} O

(Y) + {N a}_{2} S_{2} O_{3} (excess) ⟶ Z + N a {N O}_{3}

Identify

(W)

(Z)

Q. In the preparation of

H N O_{3}

, we get NO gas by catalytic oxidation of ammonia. The moles of NO produced by the oxidation of two moles of

N H_{3}

will be :

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From the given series of reactions, select the correct option(s): (I)NH3+O2→NO+H2O (II)NO+O2→NO2 (III)NO2+H2O→HNO3+HNO2 (IV)HNO2→HNO3+NO+H2O

From the given series of reactions, select the correct option(s):
$(I) N H_{3} + O_{2} \to N O + H_{2} O$
$(I I) N O + O_{2} \to N O_{2}$
$(I I I) N O_{2} + H_{2} O \to H N O_{3} + H N O_{2}$
$(I V) H N O_{2} \to H N O_{3} + N O + H_{2} O$