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Surface Chemistry

Section: Chemistry

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Question : 3

Total: 15

'A' is a protecting colloid. The following data is obtained for preventing the coagulation of 10‌mL of gold sol to which 1‌mL of 10%NaCl is added. What is the gold number of ' A '?

Expt. No.	Wt (in mg) of A added to gold sol	Coagulation
1	40	Prevented
2	35	Prevented
3	25	Not prevented
4	32	Not prevented
5	33	Prevented

[AP EAPCET 22 May 2024 Shift 2]

32
33
35
40

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