what happens when sulphur dioxide gas is reacted with hydrogen sulphide? Give chemical equation. name the substance oxidized and reduced
Answers
Answer:A good starting point for any reaction is to look at oxidation numbers. If they change, a redox reaction has occurred.
Here are some thoughts.
A dehydrating agent will extract water from another reactant. I would say that you need a hydroxyl (OH) group for this to occur. A dehydrating agent could be an acid and protonate the OH group, which can then leave as water. A catalyst is not used up in the reaction, so is hydrogen sulphide used up?
Hydrogen is usually in a +1 oxidation state and oxygen a -2 state.
Reactants
H
+
1
2
S
−
2
S
+
4
O
−
2
2
Products
S
0
H
+
1
2
O
−
2
Look at
H
2
S
, the oxidation number of sulphur has gone from -2 to 0. This means that it has been oxidised and is therefore a reducing agent.
For
S
O
2
, the oxidation number of sulphur has gone from +4 to 0. This is a reduction and makes
S
O
2
an oxidising agent. We can essentially ignore H and O in this case as they don't change.
Explanation:
Explanation:
SO2 + H2S ------> H2O + S
SO2 is reduced to S.
H2S is oxidized to H2S.
When sulphur dioxide gas is reacted with hydrogen sulphide, water and sulphur are formed.