The Question is from neet-chemistry , and it was created by the author Mr. S M HUSSAIN

Question

The action of dilute ${\rm{HN}}{{\rm{O}}_3}$ on magnesium gives:

Mr. S M HUSSAIN · Accepted Answer

## CORE INFORMATION
✓ **Answer**: [B]
## CONCEPT FRAMEWORK
	**Primary Concept**: Reaction of metals with dilute acids
	**Related Topics**: Redox reactions, Hydrogen displacement
	**Prerequisites**: Knowledge of metal reactivity series, understanding of acid reactions
## SOLUTION PATHWAY
**Given Information**:
	* Reactants: Magnesium (Mg) and dilute Nitric Acid (HNO3)
	* Product: Hydrogen gas is formed
**Method & Steps**:
	1. Identify the general reaction:
		Reasoning: Metals higher in the reactivity series react with dilute acids to produce hydrogen gas and a metal salt.
		Formula/Rule: Metal + Dilute Acid -> Metal Salt + Hydrogen gas
	2. Write the chemical equation:
		Working:  Mg + 2HNO3 (dilute)  -> Mg(NO3)2 + H2
		Key Point: Dilute nitric acid reacts with magnesium to form magnesium nitrate and hydrogen gas.
	3. Identify the product:
		Result: The gas produced is hydrogen (H2)
		Verification: Comparing the products with the options, H2 is the correct answer.
 ## OPTION ANALYSIS
[A] :x: NO: Nitric oxide is typically produced with more concentrated nitric acid and is not the primary product with dilute acid.
[B] ✓: H2: Hydrogen gas is produced when magnesium reacts with dilute acids.
[C] :x: NO2: Nitrogen dioxide is produced when a metal reacts with concentrated nitric acid.
[D] :x: NH4NO3: Ammonium nitrate is a product of a reduction of concentrated nitric acid with a metal, not with dilute acid.
 ## LEARNING AIDS
	**Common Mistakes**:
		1.[Error 1]: Confusing the products with concentrated nitric acid. : [Remember that dilute nitric acid typically produces hydrogen gas with reactive metals, while concentrated acid produces nitrogen oxides.]
		2.[Error 2]: Incorrectly identifying the gas produced. : [Recall that hydrogen gas is produced when reactive metals react with dilute acids.]
	**Quick Tips**:
		1.[Helpful shortcut]: Remember the general rule: reactive metal + dilute acid -> metal salt + hydrogen gas.
		2.[Memory aid]: Think of the hydrogen displacement reaction.

Mr. S M HUSSAIN · Answer

${\rm{NO}}$

Mr. S M HUSSAIN · Answer

The correct Option is "${{\rm{H}}_2}$"

Mr. S M HUSSAIN · Answer

${\rm{N}}{{\rm{O}}_2}$

Mr. S M HUSSAIN · Answer

${\rm{N}}{{\rm{H}}_4}{\rm{N}}{{\rm{O}}_3}$

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