SATHEE: Chemical Thermodynamics Question 317

Chemical Thermodynamics Question 317

Question: The value of enthalpy change ( $Δ H$ ) for the reaction $C_{2} H_{2} O H (l) + 3 O_{2} (g) \to 2 C O_{2} (g) + 3 H_{2} O (l)$ a $27^{\circ} C$ is -1366.5 kJ $m o l^{- 1}$ . The value of internal energy change for the above reaction at this temperature will be

Options:

A) -1371.5 kJ

B) -1369.0 kJ

C) -1364.0 kJ

D) -1361.5 kJ

Show Answer

Answer:

Correct Answer: C

Solution:

Relation between $Δ H$ (enthalpy change) and $Δ E$ (internal energy change) is $Δ H = Δ E + Δ n_{g} R T$ Where $Δ n_{g}$ =(moles of gaseous products)-(moles of gaseous reactants) For the given reaction, $Δ n_{g} = 2 - 3 = - 1$

$\Rightarrow - 1366.5 = Δ E - 1 \times 8.314 \times 10^{- 3} \times 300$

$∴ Δ E = - 1364.0 k J, m o l^{- 1}$

Privacy Policy

Powered by Prutor@IITK

sathee@iitk.ac.in

Media coverage of SATHEE

Play Store

App Store

Ask SATHEE

Welcome to SATHEE !
Select from 'Menu' to explore our services, or ask SATHEE to get started. Let's embark on this journey of growth together! 🌐📚🚀🎓

I'm relatively new and can sometimes make mistakes.
If you notice any error, such as an incorrect solution, please use the thumbs down icon to aid my learning.
To begin your journey now, click on "I understand".

Chemical Thermodynamics Question 317

Question: The value of enthalpy change ( ΔH ) for the reaction C2H2OH(l)+3O2(g)→2CO2(g)+3H2O(l) a 27∘C is -1366.5 kJ mol−1 . The value of internal energy change for the above reaction at this temperature will be

Options:

Answer:

Solution:

Engineering Preparation

Medical Preparation

NCERT Books & Solutions

Important Resources

Other Resources

Syllabus

Test Platform

Sample Mock Test

Mentorship

NCERT Exercise Video Solution

Menu

Question: The value of enthalpy change ( $Δ H$ ) for the reaction $C_{2} H_{2} O H (l) + 3 O_{2} (g) \to 2 C O_{2} (g) + 3 H_{2} O (l)$ a $27^{\circ} C$ is -1366.5 kJ $m o l^{- 1}$ . The value of internal energy change for the above reaction at this temperature will be