Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
AP EAMCET202119 Aug 2021Evening ShiftChemistryThermodynamics (C)Actual

Two flasks A and B have equal volumes. A is maintained at 300 K and B at 600 K . Equal masses of H 2 and CO 2 are taken in flasks A and B respectively. Find the ratio of total K . E of gases in flask A to that of B .

Options

  1. A1 : 2
  2. B11 : 1
  3. C33 : 2
  4. D55 : 7

Correct answer

B. 11 : 1

Step-by-step solution

We know that the average kinetic energy depends on the temperature and number of moles. Now, K . E . expression for flasks   A and B is given below: K . E . A ​ = 3 n A RT   A ​ ​ 2 K . E . B = 3 n B RT B 2 Assume common mass = m n A = m / 2 n B ​ = m / 44 K . E . A K . E . B = n A T A n B T B = m / 2 × 300 m / 44 × 600 = 11 : 1

Practice Thermodynamics (C) on Quantrex Academy →

More from Thermodynamics (C)

Identify the INCORRECT statement 2026The standard enthalpies of formation of CH₄ (g), CO₂ (g) and H₂ O(l) are -74.8 kJ mol ⁻¹ , -393.5 kJ mol ⁻¹ and -285.8 kJ mol ⁻¹ respectively. Then the enthalpy change for the give 2026For an ideal gas undergoing an isothermal change, there is 2026Ozone is formed by the reaction O _ 2(g) + O _ (g) O _ 3(g) , H = -107.2 kJ . Given O=O bond energy is 498.0 kJ mol ⁻¹ , the average bond energy of ozone is: 2026H and S for a reaction are 35.5 kJ mol ⁻¹ and 83.6 J K ⁻¹ respectively. Assuming that H and S do not vary with temperature, the reaction is spontaneous when: 2026The heat of combustion of carbon to CO ₂ is -393.5 kJ mol ⁻¹ . The heat released on the formation of 35.2 g of CO ₂ by combustion of C is: 20265 moles of a gas is allowed to pass through a series of changes as shown in the graph, in a cyclic process. The processes C A , B C and A B respectively are 20251 mole of an ideal gas is allowed to expand isothermally and reversibly from 1 L to 5 L at 300 K. The change in enthalpy (in kJ ) is ( R =8.3 ~J ~K ⁻¹ ~mol ⁻¹ ) 2025 Full Thermodynamics (C) list All AP EAMCET PYQs