题目内容

When the pH of kaolinite suspension is increased, the absolute number of variable charges ( ).

A. increases
B. decreases
C. does not change
D. It is impossible to judge

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Which of the following item has the largest specific surface area assuming that they have the same density?

A sphere with the diameter of 5 μm
B. A rectangular block with the length of 10 μm, width of 8 μm and thickness of 5 μm
C. A cube with the length of the side of 8 μm
D. A sphere with the diameter of 8 μm

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Which of the following is acid cation?

A. Ca2+
B. H+
C. Mg2+
D. K+

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Ions with the same valence share the same exchange ability.

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Only permanent surface charges are present on the surface of typical 1: 1 phyllosilicate clay mineral-kaolinite.

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When the pH of kaolinite suspension is increased, the absolute number of variable charges ( ).

A. increases B. decreases C. does not change D. It is impossible to judge

Which of the following item has the largest specific surface area assuming that they have the same density?

Which of the following is acid cation?

Ions with the same valence share the same exchange ability.

Only permanent surface charges are present on the surface of typical 1: 1 phyllosilicate clay mineral-kaolinite.

A. increases
B. decreases
C. does not change
D. It is impossible to judge