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【单选题】
下列关于胶体颗粒表面 ξ 电位的叙述是正确的。A.
同一类胶体颗粒在不同的水中表现出的ξ电位一定相同
B.
不同的胶体颗粒在同一个水体中表现出的ξ电位一定相同
C.
胶体颗粒的总电位越高，ξ电位也越高
D.
胶体表面的ξ电位越高，颗粒之间越不容易聚结
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