'A' is a protecting colloid. The following data is obtained for preventing the coagulation of 10 {\mL} of gold sol to which 1 {\mL} 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]

Surface Chemistry

Section: Chemistry

Question : 17 of 29

Marks: +1, -0

'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]

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