English
Tamil Nadu Board of Secondary EducationHSC Science Class 11

An ideal gas expands from the volume of 1 × 10–3 m3 to 1 × 10–2 m3 at 300 K against a constant pressure at 1 × 105 Nm–2. The work done is

Advertisements
Advertisements

Question

An ideal gas expands from the volume of 1 × 10–3 m3 to 1 × 10–2 m3 at 300 K against a constant pressure at 1 × 105 Nm–2. The work done is

Options

  • – 900 J

  • 900 kJ

  • 270 kJ

  • – 900 kJ

MCQ
Advertisements

Solution

– 900 J

shaalaa.com
  Is there an error in this question or solution?
Chapter 7: Thermodynamics - Evaluation [Page 221]

APPEARS IN

Samacheer Kalvi Chemistry - Volume 1 and 2 [English] Class 11 TN Board
Chapter 7 Thermodynamics
Evaluation | Q I. 7. | Page 221

RELATED QUESTIONS

Answer in brief.

Obtain the expression for work done in chemical reaction.


Answer the following question.

Calculate ΔU at 298 K for the reaction,

C2H4(g) + HCl(g) → C2H5Cl(g), ΔH = - 72.3 kJ

How much PV work is done?


Answer the following question.

When 6.0 g of O2 reacts with CIF as per 

\[\ce{2ClF_{(g)} + O2_{(g)} -> Cl2O_{(g)} + OF2_{(g)}}\]

The enthalpy change is 38.55 kJ. What is the standard enthalpy of the reaction? (Δr H° = 205.6 kJ)


Calculate the standard enthalpy of formation of \[\ce{CH3OH_{(l)}}\] from the following data:

\[\ce{CH3OH_{(l)} + 3/2 O2_{(g)} -> CO2_{(g)} + 2H2O_{(l)} }\]; ΔrH° = − 726 kJ mol-1 

\[\ce{C_{(graphite)} + O2_{(g)} -> CO2_{(g)}}\]; ΔcH° = −393 kJ mol−1

\[\ce{H2_{(g)} + 1/2 O_{(g)} -> H2O_{(l)}}\]; ΔfH° = −286 kJ mol−1


The standard enthalpies of formation of SO2 and SO3 are −297 kJ mol−1 and −396 kJ mol−1 respectively. Calculate the standard enthalpy of reaction for the reaction: \[\ce{SO2 + 1/2O2 -> SO3}\]


For which of the following ∆U = ∆H?


Given the bond energies N ≡ N, H – H and N – H bonds are 945, 436 and 391 kJ/mol respectively. The enthalpy of the reaction;

\[\ce{N2_{(g)} + 3H2_{(g)} -> 2NH3_{(g)}}\]


If 2 kJ of heat is released from system and 6 kJ of work is done on the system, what is enthalpy change of system?


In which of the following reactions, ΔH is not equal to ΔU?


In a particular reaction, 2 kJ of heat is released by the system and 8 kJ of work is done on the system. Determine ΔU.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×