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Consider the following reaction and sele...

Consider the following reaction and select incorrect statement about gas (P):
`Zn+HNO_(3)("Dilute")toZn(NO_(3))_(2)+Puarr`

A

Gives neutral solution in water

B

Contains more `O_2` than air

C

Forms brown ring with `FeSO_4` solution

D

None of these

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding the reaction of zinc with dilute nitric acid and the properties of the gas produced, we can follow these steps: ### Step 1: Write the balanced chemical equation The reaction between zinc (Zn) and dilute nitric acid (HNO₃) can be represented as follows: \[ \text{Zn} + 2 \text{HNO}_3 \rightarrow \text{Zn(NO}_3\text{)}_2 + \text{P} \] In this reaction, P represents the gas evolved during the reaction. ### Step 2: Identify the gas produced (P) When zinc reacts with dilute nitric acid, the gas produced (P) is typically nitrogen dioxide (NO) or a mixture of gases including nitrogen monoxide (NO) and dinitrogen tetroxide (N₂O₄). However, in the case of dilute HNO₃, the primary gas evolved is nitrogen monoxide (NO). ### Step 3: Analyze the properties of the gas (P) 1. **NO gas properties**: - NO is a colorless gas that can form a brown ring complex with ferrous sulfate (FeSO₄) in the presence of sulfuric acid. - It is a neutral gas and does not support combustion. 2. **N₂O properties**: - N₂O (nitrous oxide) is a colorless gas that is often referred to as "laughing gas." - It contains 33.3% oxygen, which is more than the oxygen content in air. ### Step 4: Evaluate the statements provided in the options To determine which statement is incorrect about gas P, we will compare the properties of NO and N₂O with the statements given in the options. ### Conclusion Based on the properties of the gases produced: - If one of the options states that gas P forms a brown ring with FeSO₄, that would be a correct statement since NO does form this complex. - If another option states that gas P does not contain oxygen or has less oxygen than air, that would be incorrect since NO does not contain oxygen in the same way N₂O does. Thus, we conclude that the incorrect statement about gas P is likely related to its properties or behavior in reactions.
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