Home
Class 12
CHEMISTRY
On addition of 1 ml of solution of 10% N...

On addition of 1 ml of solution of 10% NaCl to 100ml corporate gold sol in presence of 0.25g of starch, the coagulation is just prevented. The gold number of starch is

A

`0.025`

B

`0.25`

C

`2.5`

D

`25`

Text Solution

Verified by Experts

The correct Answer is:
D
Gold number is minimum amount of protective colloid when can protect `10 ml` standard gold sol from coagulation when `1 ml` of `10%` NaCl is added.
Promotional Banner

Similar Questions

Explore conceptually related problems

the protective power of the lyophilic colloids es expressed in terms of gold number, a term introduced by Zsigmondy. Gold number is the number of milli - gram of the protective colloid which prevent the coagulation of 10 mLof red gold sol , when 1 mL of a 10 per cent solution of sodium chloride is added to it . thus smaller the gold number of lyophillic colloid, the greater is the protective power. On addition of one mL of sloution of 10 % NaCl to 10 mL. of red gold sol in presence of 0.025 g of starch the coagultion is just prevented . the gold number of starch is

On addition of 1 mL solution of 10% NaCl to 10 mL gold sol in the presence of 0.0250 g of starch, the coagulation is just prevented. What is the gold number of starch?

on addition of 1 ml solution of 10% NaCl to 10 ml gold sol in the presence of 0.25g of strach, the coagulation is just prevented. Strach has the following gold number

On addition of 2mL of 5% NaCl to 10 mL gold sol in the presence of 0.025 g starch , the coagulation is just prevented. What is the gold number of starch ?

On addition of the 1 ml. solution of 10% NaCl to 10ml gold sol in the presence of 0.00399 gm of starch calculate the gold no.

On addition of one ml solution of 10% NaCl to 10 ml gold solution in the presence of 0.009 g of an anticoagulant, the coagulation is prevented. What is the gold number of anticoagulant?

What is meant by Gold number of starch is 10-15?

The coagulation of 10cm^(3) of gold sol by 1 ml 10% NaCl solution is completely prevented by addition of 0.025g of starch to it. The gold number of starch is

The coagulation of 100mL of a colloidal solution of gold is completely prevented by adding 0.25g of starch to it before adding 10mL of 10%NaCl solution. The gold number of starch is

The coagulation of 200 ml of a colloidal solution of gold is completely prevented by adding 0.50 gm of starch to it before adding 1 ml of 10% NaCl solution. Calculate the gold number of starch.