Predict whether aqueous solutions of the following substances are acidic, basic, or neutral: (a) AlCl3 (b) NaBr (c) NaClO

Question

Predict whether aqueous solutions of the following substances are acidic, basic, or neutral:
(a) AlCl3
(b) NaBr
(c) NaClO
(d) 3CH3NH34NO3
(e) Na2SO3

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Delwyn 1 week 2021-07-22T20:22:34+00:00 1 Answers 7 views 0

Answers ( )

    0
    2021-07-22T20:24:10+00:00

    Answer:

    A. Acidic

    B. Neutral

    C. Basic

    D. Acidic

    E. Basic

    Explanation:

    The reaction of salts with water to give aqueous solutions which are either acidic, basic or neutral is known as salt hydrolysis. Salts that are produced from the reaction of strong acids and weak bases give acidic solutions. Salts that are produced the reaction between weak acids and strong bases give basic solutions. Neutral solutions are obtained from salts produced bynthe reaction of strong acids and strong bases.

    The hydrolysis of the given salts are shown below:

    A. AlCl₃ + 3 H₂O —> 3 HCl + Al(OH)₃

    The aqueous solution produced will be acidic since HCl is a strong acid while Al(OH)₃ is a weak base.

    B. NaBr + H₂O —-> HBr + NaOH

    The aqueous solution produced will be neutral since HBr is a strong acid and NaOH is strong base as well.

    C. NaClO + H₂O —-> HClO + NaOH

    The aqueous solution produced will be basic since HClO is a weak acid while NaOH is a strong base.

    D. CH₃NH₃NO₃ + H₂O —-> HNO₃ + CH₃NH₂ + H₂O

    The aqueous solution produced will be acidic since HNO₃ is a strong acid while CH₃NH₂ is a weak base.

    E. Na₂SO₃ + 2 H₂O —-> H₂SO₃ + 2 NaOH

    The aqueous solution produced will be basic since H₂SO₃ is a weak acid while NaOH is a strong base.

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )