Ask Question
19 January, 19:03

Dissolving brass requires an oxidizing acid such as concentrated nitric acid. Nitrogen dioxide is produced as a byproduct in this reaction. Write a balanced chemical equation for the reaction of copper metal with concentrated nitric acid to pro duce copper (il) nitrate, nitrogen dioxide, and water.

+5
Answers (1)
  1. 19 January, 22:53
    0
    Cu + 4 HNO₃ → Cu (NO₃) ₂ + 2 NO₂ + 2 H₂O

    Explanation:

    Step 1: Write down the chemical formulas of given substances,

    Copper Metal = Cu

    Nitric Acid = HNO₃

    Copper (II) Nitrate = Cu (NO₃) ₂

    Nitrogen Dioxide = NO₂

    Water = H₂O

    Step 2: Write down the unbalance Chemical equation,

    Cu + HNO₃ → Cu (NO₃) ₂ + NO₂ + H₂O

    Step 3: Balance Cu atoms on both sides;

    The number of Cu atoms on both sides are same. Hence, there number will remain the same.

    Step 4: Balance N atoms on both sides;

    As there is 1 N atom on left hand side and 3 N atoms on right hand side, so we will multiply HNO₃ by 3 to balance N on both sides, hence,

    Cu + 3 HNO₃ → Cu (NO₃) ₂ + NO₂ + H₂O

    Step 5: Balance O atoms on both sides;

    As there are 9 O atom on left hand side and 9 O atoms on right hand side, so they are balance.

    Step 6: Balance H atoms on both sides;

    As there are 3 H atom on left hand side and 2 H atoms on right hand side, so we will multiply H₂O by 2 as,

    Cu + 3 HNO₃ → Cu (NO₃) ₂ + NO₂ + 2 H₂O

    By doing so the number of O atoms got imbalanced, so to balance O atoms again we will multiply HNO₃ by 4 as,

    Cu + 4 HNO₃ → Cu (NO₃) ₂ + NO₂ + 2 H₂O

    Now, The Cu and H atoms are balanced, and the O atoms are greater on left hand side and the N atoms are greater on right hand side, therefore we will multiply NO₂ by 2 to balance both N and O as,

    Cu + 4 HNO₃ → Cu (NO₃) ₂ + 2 NO₂ + 2 H₂O
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “Dissolving brass requires an oxidizing acid such as concentrated nitric acid. Nitrogen dioxide is produced as a byproduct in this reaction. ...” in 📙 Chemistry if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers