Two reactions are given below-i COg - 1-2O2g- CO2gii Ag2Os- 2Ags - 1-2O2gWhich of the following statements is true-

The correct option is A For (i) ▵ H ▵ E Δ H=Δ E+Δ n _ g RT #160;(i) CO(g) + 1 2 O _ 2 (g) ⟶ #160; C O _ 2 (g) #160; #160;Δ ...

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Byju's Answer

Standard XII

Chemistry

Enthalpy

Two reactions...

Question

Two reactions are given below:
(i) $C O_{(g)} + \frac{1}{2} O_{2} (g) \to C O_{2} (g)$
(ii) $A g_{2} O_{(s)} \to 2 A g_{(s)} + \frac{1}{2} O_{2} (g)$
Which of the following statements is true?

For (i)

△

H <

△

E and for (ii)

△

H >

△

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For (i)

△

H >

△

E and for (ii)

△

H <

△

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For both (i) and (ii)

△

H >

△

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For both (i) and (ii)

△

H <

△

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Solution

The correct option is A For (i) $△$ H < $△$ E and for (ii) $△$ H > $△$ E
$Δ H = Δ E + Δ n_{g} R T$

(i) $C O (g) + \frac{1}{2} O_{2} (g) ⟶ C O_{2} (g)$

$Δ n_{g} = 1 - \frac{1}{2} - 1 = - \frac{1}{2} < 0$

$∴ Δ H < Δ E$

(ii) ${A g}_{2} O (s) ⟶ 2 A g (s) + \frac{1}{2} O_{2} (g)$

$Δ n_{g} = \frac{1}{2} + 0 - 0 = \frac{1}{2} > 0$

$∴ Δ H > Δ E$

So, the correct option is A.

Suggest Corrections

Similar questions

Statements: E * F; G $ H; H # E; G @ K

Conclusions:

I. H@K

II. H*F

Statements: E * F; G $ H; H # E; G @ K

Conclusions:

I. H@K

II. H*F

Q. Methane is a commercial source of

H_{2}

through the reaction
(I)

C H_{4} (g) + \frac{1}{2} O_{2} (g) \to C O (g) + 2 H_{2} (g)

Based on the following thermochemical equations (II to IV)
(II)

C H_{4} (g) + 2 O_{2} (g) \to C O_{2} (g) + 2 H_{2} O (g); △ H = - 800 k J

(III)

C H_{4} (g) + C O_{2} (g) \to 2 C O (g) + 2 H_{2} (g); △ H = + 235 k J

(IV)

C H_{4} (g) + H_{2} O (g) \to C O (g) + 3 H_{2} (g); △ H = + 204 k J

△ H

of equation (I) is

Q. Consider the following reaction:

C O_{(g)} + \frac{1}{2} O_{2 (g)} \to C O_{2 (g)}

How are

△

E and

△

H related for the reaction?

Q. Methane is a commercial source of

H_{2}

through the reaction
(I)

C H_{4} (g) + \frac{1}{2} O_{2} (g) \to C O (g) + 2 H_{2} (g)

Based on the following thermochemical equations (II to IV)
(II)

C H_{4} (g) + 2 O_{2} (g) \to C O_{2} (g) + 2 H_{2} O (g); △ H = - 800 k J

(III)

C H_{4} (g) + C O_{2} (g) \to 2 C O (g) + 2 H_{2} (g); △ H = + 235 k J

(IV)

C H_{4} (g) + H_{2} O (g) \to C O (g) + 3 H_{2} (g); △ H = + 204 k J

△ H

of equation (I) is

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Two reactions are given below:(i) CO(g)+12O2(g)→CO2(g)(ii) Ag2O(s)→2Ag(s)+12O2(g)Which of the following statements is true?

The correct option is A For (i) △H < △E and for (ii) △H > △EΔH=ΔE+ΔngRT (i) CO(g)+12O2(g)⟶CO2(g)Δng=1−12−1=−12<0∴ΔH<ΔE(ii) Ag2O(s)⟶2Ag(s)+12O2(g)Δng=12+0−0=12>0 ∴ΔH>ΔESo, the correct option is A.

Two reactions are given below:
(i) $C O_{(g)} + \frac{1}{2} O_{2} (g) \to C O_{2} (g)$
(ii) $A g_{2} O_{(s)} \to 2 A g_{(s)} + \frac{1}{2} O_{2} (g)$
Which of the following statements is true?