On reaction of Lead Sulphide with dilute nitric acid which of the following is not formed ?
- Lead nitrate
- Sulphur
- Nitric oxide
- Nitrous oxide
The Correct Option is D
Approach Solution - 1
To solve this question, we need to understand the chemical reaction that occurs when Lead Sulphide (PbS) reacts with dilute nitric acid (HNO3).
The chemical reaction between lead sulphide and dilute nitric acid can be represented as follows:
\(PbS + 4HNO_3 \rightarrow Pb(NO_3)_2 + 2H_2O + 2NO_2 + S\)
Breaking down the reaction, we can observe the formation of the following products:
- Lead Nitrate (Pb(NO3)2)
- Sulphur (S)
- Nitrogen Dioxide (NO2)
- Water (H2O)
From the given options, we can analyze and conclude:
- Lead Nitrate: This compound is formed as a primary product in the reaction.
- Sulphur: This is also formed as a product as shown in the reaction.
- Nitric Oxide (NO): This compound is not part of the given reaction, so it cannot be formed here.
- Nitrous Oxide (N2O): This compound is the one not mentioned in any part of the reaction and is not a typical product of the reaction of lead sulphide with dilute nitric acid.
Based on the analysis, the correct answer is:
Nitrous oxide (N2O) is not formed in this reaction.
Approach Solution -2
The reaction between Lead Sulphide (PbS) and dilute nitric acid (\(HNO_3\)) proceeds as follows:
\(PbS + 2HNO_3 \rightarrow Pb(NO_3)_2 + NO + S + H_2O\)
Key Points:
- The products of this reaction are:
- Lead nitrate (\(Pb(NO_3)_2\)) – a soluble salt.
- Nitric oxide (NO) – a gaseous product.
- Sulphur (S) – a precipitate.
- Water (\(H_2O\)).
- Nitrous oxide (\(N_2O\)) is not formed during this reaction.
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