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9 February, 15:46

Hard water deposits (calcium carbonate) have built up around your bathroom sink. Which of these substances would be most effective in dissolving the deposits? Select one:

a. ammonia

b. bleach (sodium hypochlorite)

c. lye (sodium hydroxide)

d. vinegar (acetic acid)

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Answers (1)
  1. 9 February, 16:46
    0
    Answer: D. Vinegar (acetic acid)

    Explanation:

    Note: Calcium carbonate dissolves in Vinegar as it is strong enough to do this, but it is cannot to dissolve metals (except such metal reacts with water).
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