How coagulation power and gold number are related?

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Q. In the coagulation of gold sol, which ion has highest fiocculating power?

The protective power of the lyophilic colloids is expressed in terms of gold number, a term introduced by Zsigmondy. The gold number is the number of milligrams of the protective colloid that prevents the coagulation of

10 m L

of a red gold sol when

1 m L

of a

10

percent solution of sodium chloride is added to it.

Which of the following statement(s) is/are correct

Q. Coagulation value of the electrolytes

A l C l_{3}

and

N a C l

for

A s_{2} S_{3}

sol are

0.093

and

52

repectively. How many times

A l C l_{3}

has greater coagulating power than

N a C l

Q. The gold number of haemoglobin is 0.03. 100mL of gold sol will require how much haemoglobin so that gold is not coagulated by 10mL of 10% NaCl solution?

Coagulation values of the electrolytes $A l C l_{3}$ and $N a C l$ for $A s_{2} S_{3}$ solution are $0.093$ and $52$ respectively. How many times $A l C l_{3}$ has a greater coagulating power than $N a C l$ ?

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