Question

Осуществите следующие превращения:1)h2o->o2->so2->h2so3;2)h2o2->o2->k2o->koh

Answer 1

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Answer 2

1. h2o -> o2 -> so2 -> h2so3:

a) h2o -> o2: This is a decomposition reaction where water (h2o) decomposes into oxygen gas (o2). 2h2o -> 2o2

b) o2 -> so2: This is a combination reaction where oxygen gas (o2) reacts with sulfur to form sulfur dioxide (so2). o2 + s -> so2

c) so2 -> h2so3: This is a reaction with water (hydration) where sulfur dioxide (so2) reacts with water to form sulfurous acid (h2so3). so2 + h2o -> h2so3

The overall reaction is: 2h2o -> 2o2 -> so2 + h2o -> h2so3

2. h2o2 -> o2 -> k2o -> koh:

a) h2o2 -> o2: This is a decomposition reaction where hydrogen peroxide (h2o2) decomposes into oxygen gas (o2). 2h2o2 -> 2o2 + 2h2o

b) o2 -> k2o: This is a combination reaction where oxygen gas (o2) reacts with potassium metal (k) to form potassium oxide (k2o). 2o2 + 4k -> 2k2o

c) k2o -> koh: This is a reaction with water (hydration) where potassium oxide (k2o) reacts with water to form potassium hydroxide (koh). k2o + h2o -> 2koh

The overall reaction is: 2h2o2 -> 2o2 + 2h2o -> 2k2o + 2h2o -> 2koh