Chemistry

8th

grade

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3-3 酸鹼濃度

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23 questions

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  • 1. Multiple Choice
    30 seconds
    1 pt

    下列各離子中,哪一種代表酸性?

    H+

    NO3-

    SO42-

    OH-

  • 2. Multiple Choice
    30 seconds
    1 pt

    NaCl溶液的濃度為0.01M,其pH值等於多少?

    2

    7

    1

    0

  • 3. Multiple Choice
    30 seconds
    1 pt

    在氫氧化鈉溶液中,加入純水稀釋後,則其pH值會如何?

    減少

    增加

    不變

    忽大忽小

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