MCQ
For which of the following reaction, ΔH = ΔU?
- A$\ce{H2O_{(l)} ->[\Delta] H2O_{2(g)}}$
- B$\ce{PCl_{5(g)} ->[\Delta] PCl_{3(g)} + Cl_{2(g)}}$
- ✓$\ce{H_{2(g)} + Br_{2(g)} -> 2 HBr_{(g)}}$
- D$\ce{2CO_{(g)} + O_{2(g)} -> 2 CO_{2(g)}}$
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(i) ∆U = 0
(ii) ∆H = 0
(iii) Q = W
(iv) ∆T = 0