Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
BITSAT 2017
Exam
BITSAT
Year
2017
Subject
Chemistry
Chapter
p Block Elements (Group 15, 16, 17 & 18)

BITSAT 2017 · Chemistry · p Block Elements (Group 15, 16, 17 & 18)

For the reaction& N _ 2 O _ 4 (g) ⟶ 2 NO _ 2 (g)

For the reaction&

N2O4{N}_{2}{O}_{4}\left(g\right) ⟶ 2{NO}_{2} (g)</p>\left(g\right)</p>

Options

  1. AΔH>ΔE\Delta H > \Delta E
  2. BΔH<ΔE\Delta H < \Delta E
  3. CΔH=ΔE\Delta H = \Delta E
  4. DΔH=0\Delta H = 0

Correct answer

A. ΔH>ΔE\Delta H > \Delta E

Step-by-step solution

∵ΔH=ΔE+ΔngRT∵ \Delta H = \Delta E + {Δn}_{g}RT

and Δng{Δn}_{g} (for the given reaction) =2−1=+1= 2 - 1 = + 1

∴ΔH>ΔE∴ \Delta H > \Delta E

In exothermic reactions, heat from the system is lost to the surrounding. For such reactions, ∆H is negative.

In endothermic reactions, heat is absorbed by the system from the surroundings. For such reactions, ∆H is positive.

Practice p Block Elements (Group 15, 16, 17 & 18) on Quantrex Academy →

More from p Block Elements (Group 15, 16, 17 & 18)

In which of the following molecules, all bond lengths are not equal? BITSAT 2024The sol formed in the following unbalanced equation is As_2 O_3+H_2 S arrow BITSAT 2024Which of the following oxo acid of sulphur has O-O bond? BITSAT 2023S-S bond is not present in BITSAT 2023The total number of P-OH bonds for pyrophosphoric acid BITSAT 2022Identify the incorrect statement: BITSAT 2021Hydrolysis of NCl_ 3 gives NH_ 3 and X . Which of the following is X ? BITSAT 2021Nitrogen is obtained by the thermal decomposition of: BITSAT 2021 Full p Block Elements (Group 15, 16, 17 & 18) list All BITSAT PYQs