The reaction in which H - U isA- N 2 g - O 2 g - 2 NO g B- CaCO 3 s - CaO s - CO 2 g C- N 2 g -3 H 2 g - 2 NH 3 g D- CH 4 g -2 O 2 g - CO 2 g -2 H 2 O 1

The correct option is B CaCO_3(s)→ CaO_(s) + CO_2(g)Relation of H with U nbsp;is given by the formula: H = U + n_g RT n_g = change in number of moles of g ...

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Standard XII

Chemistry

Law of Mass Action

The reaction ...

Question

The reaction in which $△ H > △ U$ is

N_{2 (g)} + O_{2 (g)} \to 2 N O_{(g)}

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C a C O_{3 (s)} \to C a O_{(s)} + C O_{2 (g)}

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N_{2 (g)} + 3 H_{2 (g)} \to 2 N H_{3 (g)}

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C H_{4 (g)} + 2 O_{2 (g)} \to C O_{2 (g)} + 2 H_{2} O_{(l)}

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Solution

The correct option is B $C a C O_{3 (s)} \to C a O_{(s)} + C O_{2 (g)}$
Relation of $△ H$ with $△ U$ is given by the formula:
$△ H = △ U + △ n_{g} R T$
$△ n_{g}$ = change in number of moles of gas particles
Hence, $△ H > △ U$ when $△ n_{g} > 0$
This happens only in:
$C a C O_{3 (s)} \to C a O_{(s)} + C O_{2 (g)}$
$△ n_{g} = 1$

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Similar questions

Q. In which of the following reactions

Δ H

is equal to

Δ U

Which of the reaction defines $Δ H_{f}^{0}$ ?

Q. Which of the reaction defines

Δ H_{f}^{\circ}

Q. For which of the following reactions,

K_{P} = K_{C}

Q. Take following sequential reactions :

2 H_{2} O (l) ⟶ 2 H_{2} (g) + O_{2} (g)

N_{2} (g) + 3 H_{2} (g) ⟶ 2 N H_{3} (g)

C a C O_{3} (s) ⟶ C a O (s) + C O_{2} (g)

N H_{3} (g) + C O_{2} (g) + H_{2} O (l) ⟶ N H_{4} H C O_{3} (a q)

We want to produce

0.10

mol

N H_{4} H C O_{3}

H_{2} O (l)

required is

\frac{y}{100}

mol.
What is

y

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The reaction in which △H>△U is

The correct option is B CaCO3(s)→CaO(s)+CO2(g)Relation of △H with △U is given by the formula: △H=△U+△ngRT △ng = change in number of moles of gas particles Hence, △H>△U when △ng>0 This happens only in: CaCO3(s)→CaO(s)+CO2(g) △ng=1

The reaction in which $△ H > △ U$ is