Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NEET2011ChemistryThermodynamics (C)Actual

Consider the following processes H( ~kJ / mol ) array ll 1 / 2 A B & +150 3 B 2 C+D & -125 E+A 2 D & +350 array For B+D E+2 C, H will be

Options

  1. A525 ~kJ / mol
  2. B-175 ~kJ / mol
  3. C-325 ~kJ / mol
  4. D325 ~kJ / mol

Correct answer

B. -175 ~kJ / mol

Step-by-step solution

aligned & 1 2 A B ; H=150 ~kJ / mol & 3 B 2 C+D ; H=-125 ~kJ / mol & E+A 2 D ; H=+350 ~kJ / mol & By [2 ( i )+( ii )]-( iii ), we have & B+D E+2 C & H=150 2+(-125)-350 & =-175 ~kJ / mol . aligned

Practice Thermodynamics (C) on Quantrex Academy →

More from Thermodynamics (C)

A certain organic solvent has H _vap = 28.50 kJ mol ⁻¹ and S _vap = 88.2 J K ⁻¹ mol ⁻¹ at 1 bar. Calculate its normal boiling point (where G = 0 ). 2026Which of the following statements regarding spontaneous process is NOT true? 2026Calculate H for a reaction, 2X_ (g) + Y_ (g) 2Z_ (g) at 298 K if U = -10.5 kJ and R = 8.314 J K ⁻¹ mol ⁻¹ . 2026500 mL of nitrogen gas and 750 mL hydrogen gas were allowed to react at 1 bar pressure according to reaction, N _ 2(g) + 3 H _ 2(g) 2 NH _ 3(g) What is PV type of work done during 2026The relationship between H and U for the reaction, PCl ₃(g) + Cl ₂(g) PCl ₅(g) is given as 2026What would be the heat released in kJ when 450 cm ^3 of 0.02 M H ₂ SO ₄ is mixed with 650 cm ^3 of 0.1 M NaOH ? (Heat of neutralization of H ₂ SO ₄ and NaOH is -114 kJ/mol of H ₂ S 2026Identify from following reactions that it takes place with H = U . 2026Calculate the work done in the following reaction at 300 K , A (g) + B (g) = 2 C (g) [R = 8.314 JK ⁻¹ mol ⁻¹] 2026 Full Thermodynamics (C) list All NEET PYQs