Verified Solution • 2025–26 Session moderate

QJEEM18Chdde4: JEE Main 2018 Chemistry - Class 11 JEEM18Chdde4 Solution: For which of the following reactions, Δ H is equal to Δ U?

For which of the following reactions, ΔH is equal to ΔU?

Multiple Choice Options

  • A N2(g) + 3H2(g) → 2NH3(g)
  • B 2HI(g) → H2(g) + I2(g)
  • C 2NO2(g) → N2O4(g)
  • D 2SO2(g) + O2(g) → 2SO3(g)

Step-by-Step Verified Solution

ΔH = Δμ + Δng RT

∴ ΔH = Δμ

When, Δng RT = 0

⇒ Δng = 0

For this reaction,

2HI(g) → H2 (g) + I2 (g)

Δng = (1 + 1) − 2 = 0

∴ ΔH = Δμ

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