Which equation shows conservation of mass and energy for a reaction at 101.3 kpa and 298 k?

a. 2h2 (g) + o2 (g) 2h2o (g) + 483.6 kj

b. 2h2 (g) + o2 (g) 2h2o (l) + 285.8 kj

c. h2 (g) + o2 (g) h2o (g) + 483.6 kj

d. h2 (g) + o2 (g) h2o (l) + 285.8 kj?

Question

Elaina Richard

Chemistry

17 September, 20:26

Which equation shows conservation of mass and energy for a reaction at 101.3 kpa and 298 k?

a. 2h2 (g) + o2 (g) 2h2o (g) + 483.6 kj

b. 2h2 (g) + o2 (g) 2h2o (l) + 285.8 kj

c. h2 (g) + o2 (g) h2o (g) + 483.6 kj

d. h2 (g) + o2 (g) h2o (l) + 285.8 kj?

+5

Answers (1)

Know the Answer?

Blair · Answer 1

C and D are not correctly balanced so it is not show conservation of energy also for B the energy value is not correct it is not show conservation of mass and energy so the correct answer is A:

2 H₂ (g) + O₂ (g) → 2 H₂O (g) + 483.6 kJ

Which equation shows conservation of mass and energy for a reaction at 101.3 kpa and 298 k?a. 2h2 (g) + o2 (g) 2h2o (g) + 483.6 kjb. 2h2 (g) + o2 (g) 2h2o (l) + 285.8 kjc. h2 (g) + o2 (g) h2o (g) + 483.6 kjd. h2 (g) + o2 (g) h2o (l) + 285.8 kj?

Which equation shows conservation of mass and energy for a reaction at 101.3 kpa and 298 k?

a. 2h2 (g) + o2 (g) 2h2o (g) + 483.6 kj

b. 2h2 (g) + o2 (g) 2h2o (l) + 285.8 kj

c. h2 (g) + o2 (g) h2o (g) + 483.6 kj

d. h2 (g) + o2 (g) h2o (l) + 285.8 kj?