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11 April, 08:20

When the equation Al (OH) ₃ + H₂SO₄ - --> Al₂ (SO₄) ₃ + H₂O is balanced, the sum of the balancing coefficients is

A. 5

B. 7

C. 11

D. 12

+3
Answers (1)
  1. 11 April, 08:26
    0
    The answer to your question is the letter D. 12

    Explanation:

    Unbalanced chemical reaction

    Al (OH) ₃ + H₂SO₄ ⇒ Al₂ (SO₄) ₃ + H₂O

    Reactants Elements Products

    1 Al 2

    1 S 3

    5 H 2

    7 O 13

    Balanced chemical reaction

    2Al (OH) ₃ + 3H₂SO₄ ⇒ Al₂ (SO₄) ₃ + 6H₂O

    Reactants Elements Products

    2 Al 2

    3 S 3

    12 H 12

    18 O 18

    Sum up the coefficients

    Result = 2 + 3 + 1 + 6

    = 12
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