Q714
The negative charge on 2 : 1 clays is
A.
pH dependent
B.
pH independent
C.
Both A and B
AnswerD.
None of these
Answer: Option C
Solution
Answer: Option C
Solution:
The negative charge on 2 : 1 Clays is both pH-dependent and pH-independent.A 2 : 1 clay consists of an octahedral sheet sandwiched between two tetrahedral sheets and 2 : 1 layers have a net negative charge and may be bonded together either by individual cations or by positively charged octahedral sheets.
Some examples are talc, vermiculite and montmorillonite.