This equation is correctly balanced, showing the reaction between magnesium (Mg) and nitric acid (HNO3) to produce magnesium nitrate (Mg(NO3)2) and hydrogen gas (H2).
(b) Incorrect equation:
HNO3 + Mg → Mg (NO3)2 + H2O + N₂O
This equation is not correctly balanced, and the products are not balanced with the reactants. It also includes the formation of water (H2O) and nitrous oxide (N₂O), which are not typically produced in this reaction.
(c) Correct equation:
Fe + 4 HNO3 → Fe(NO3)2 + NO + 2 H2O
This equation is correctly balanced, showing the reaction between iron (Fe) and nitric acid (HNO3) to produce iron(II) nitrate (Fe(NO3)2), nitrogen monoxide (NO), and water (H2O).
(d) Incorrect equation:
Fe + HNO3 → Fe (NO 3 ) 2 + NO₂ + H₂O 2
This equation is not correctly balanced, and the products are not balanced with the reactants. It also includes the formation of nitrogen dioxide (NO₂) and extra water (H₂O) that are not typically produced in this reaction.
(e) Incorrect equation:
3 Fe + 8HND 33 Fe (NO3)2 + N₂0 + H2O N20+
This equation is not correctly written, and the reactants and products are not properly balanced. The notation "8HND 33" is unclear and does not represent a valid chemical reaction.
(f) Correct equation:
Mn + 2 HNO3 → Mn (NO3)2 + H2 ↑
This equation is correctly balanced, showing the reaction between manganese (Mn) and nitric acid (HNO3) to produce manganese(II) nitrate (Mn(NO3)2) and hydrogen gas (H2) with the evolution of gas indicated by "H2 ↑."
So, the correctly written chemical equations are (a) and (c).
Answers & Comments
Answer:
(a) Correct equation:
Mg + 2 HNO3 → Mg(NO3)2 + H2
This equation is correctly balanced, showing the reaction between magnesium (Mg) and nitric acid (HNO3) to produce magnesium nitrate (Mg(NO3)2) and hydrogen gas (H2).
(b) Incorrect equation:
HNO3 + Mg → Mg (NO3)2 + H2O + N₂O
This equation is not correctly balanced, and the products are not balanced with the reactants. It also includes the formation of water (H2O) and nitrous oxide (N₂O), which are not typically produced in this reaction.
(c) Correct equation:
Fe + 4 HNO3 → Fe(NO3)2 + NO + 2 H2O
This equation is correctly balanced, showing the reaction between iron (Fe) and nitric acid (HNO3) to produce iron(II) nitrate (Fe(NO3)2), nitrogen monoxide (NO), and water (H2O).
(d) Incorrect equation:
Fe + HNO3 → Fe (NO 3 ) 2 + NO₂ + H₂O 2
This equation is not correctly balanced, and the products are not balanced with the reactants. It also includes the formation of nitrogen dioxide (NO₂) and extra water (H₂O) that are not typically produced in this reaction.
(e) Incorrect equation:
3 Fe + 8HND 33 Fe (NO3)2 + N₂0 + H2O N20+
This equation is not correctly written, and the reactants and products are not properly balanced. The notation "8HND 33" is unclear and does not represent a valid chemical reaction.
(f) Correct equation:
Mn + 2 HNO3 → Mn (NO3)2 + H2 ↑
This equation is correctly balanced, showing the reaction between manganese (Mn) and nitric acid (HNO3) to produce manganese(II) nitrate (Mn(NO3)2) and hydrogen gas (H2) with the evolution of gas indicated by "H2 ↑."
So, the correctly written chemical equations are (a) and (c).
Explanation: