Assertion -For a reaction- 2 NH 3 g- N 2 g-3 H 2 g- H- E Reason- Enthalpy change is always greater than internal energy change-

The correct option is C Assertion is correct but Reason is incorrect 2NH_3(Cg) #160;⟶ N_2(g) + 3H_2(g) ; H gt; E H = nR T Enthalpy ...

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Byju's Answer

Standard XII

Chemistry

Heat of Reaction

Assertion :Fo...

Question

Assertion :For a reaction:
$2 {N H}_{3} (g) ⟶ N_{2} (g) + 3 H_{2} (g); Δ H > Δ E$ Reason: Enthalpy change is always greater than internal energy change.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Assertion is correct but Reason is incorrect

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Both Assertion and Reason are incorrect

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C Assertion is correct but Reason is incorrect
$2 N H_{3} (C g) ⟶ N_{2} (g) + 3 H_{2} (g)$ ; $△ H$ $>$ $△ E$
$△ H = - n R △ T$
Enthalpy change depends on both internal energy change and change in temperature. So, reason is incorrect.

Suggest Corrections

Similar questions

Q. Assertion: The compressibility factor for

H_{2}

and

H e

(1 + \frac{P b}{R T})

Reason: The compressibility factor for

H_{2}

and

H e

can be derived from Van der Waal's equation.

Assertion (A) The enthalpy of reaction remains constant in the presence of a catalyst.

Reason (R) A catalyst participating in the reaction forms different activated complex and lowers down the activation energy but the difference in enrgy of reactant and product remains the same.

(a) Both assertion and reason are correct and the reason is correct explanation of assertion
(b) Both assertion and reason are correct, but reason does not explain assertion.
(c) Assertion is correct, but reason is incorrect
(d) Both assertion and reason are incorrect
(e) Assertion is incorrect but reason is correct.

Q. Assertion
If BOD level of water in reservoir is less than 5 ppm it is not polluted.

Reason
High biological oxygen demand means low activity of bacteria in water.

ASSERTION: n-Pentane and n-Hexane belong to a homologous series.

REASON: n-Pentane and n-Hexane belong to the same class of hydrocarbons and they differ by a - $C H_{2}$ - group.

Assertion – The non-fusible impurities present in iron ore are removed by $C a C O_{3}$ .

Reason: $C a C O_{3}$ which decomposes into $C a O$ and $C O_{2}$ . The $C a O$ formed reacts with $S i O_{2}$ to remove silica

Join BYJU'S Learning Program

Assertion :For a reaction:2NH3(g)⟶N2(g)+3H2(g);ΔH>ΔE Reason: Enthalpy change is always greater than internal energy change.

The correct option is C Assertion is correct but Reason is incorrect2NH3(Cg)⟶N2(g)+3H2(g); △H > △E△H=−nR△TEnthalpy change depends on both internal energy change and change in temperature. So, reason is incorrect.

Assertion :For a reaction:
$2 {N H}_{3} (g) ⟶ N_{2} (g) + 3 H_{2} (g); Δ H > Δ E$ Reason: Enthalpy change is always greater than internal energy change.

The correct option is C Assertion is correct but Reason is incorrect
$2 N H_{3} (C g) ⟶ N_{2} (g) + 3 H_{2} (g)$ ; $△ H$ $>$ $△ E$
$△ H = - n R △ T$
Enthalpy change depends on both internal energy change and change in temperature. So, reason is incorrect.