AIIMS 2019 Chemistry Reactions of Metals with Acids MCQ Question
The reaction of zinc with dilute and concentrated metric acid, respectively, produces:
and
and
and
and
Correct Answer
Detailed Explanation
In the reaction of zinc (Zn) with concentrated nitric acid (HNO₃), zinc forms zinc nitrate (Zn(NO₃)₂) and nitrogen dioxide (NO₂) as a product, which is represented by the equation: 4Zn + 10HNO₃ → 4Zn(NO₃)₂ + 5H₂O + 2NO₂. This differs from the reaction with dilute nitric acid, where nitrogen gas (N₂) is produced instead of NO₂. The other options are not applicable as they do not represent the correct products or conditions of the reaction. Understanding the reactivity of metals with different concentrations of acids is crucial in predicting the products formed in redox reactions.
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