100 mL of a standard sol required 240 mg...

100 mL of a standard sol required 240 mg of starch for its protection against coagulation, Calculate gold number of starch.

Text Solution

Verified by Experts

Amount of starch required for 100 mL of gold sol = 240 mg
Amount of starch required for 10 mL of gold sol `=(240xx10)/100=24mg`
Therefore, gold number for starch = 24

Topper's Solved these Questions

SURFACE CHEMISTRY
DINESH PUBLICATION|Exercise QUESTION FROM BOARD EXAMINATIONS|110 Videos
SURFACE CHEMISTRY
DINESH PUBLICATION|Exercise HIGHER ORDER THINKING SKILLS (HOTS) QUESTIONA AND NUMERICAL PROBLEMS|11 Videos
SURFACE CHEMISTRY
DINESH PUBLICATION|Exercise LONG ANSWER TYPE QUESTIONS|4 Videos
SOME BASIC CONCEPTS OF CHEMISTRY
DINESH PUBLICATION|Exercise ULTIMATE PREPARATORY PACKAGE|20 Videos
THE CARBON FAMILY
DINESH PUBLICATION|Exercise Ultimate|11 Videos

Similar Questions

Explore conceptually related problems

50 mL of standard gold solution needs 0.05 mg of gelatin for its protection from coagulation. Calculate the gold number of gelatine?

5 ml of standard gold sol, needs 0.5 mg of gelatin for its protection from coagulation, calculate the gold no of gelatin.

On adding one mL of solution of 10% NaCl to 100 mL of gold sol in the presence of 0.25 g of starch, the coagulation is just prevented. 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.

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 0l.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?

DINESH PUBLICATION-SURFACE CHEMISTRY -ADDITIONAL IMPORTANT QUESTIONS

For drying H(2)S gas concentrated H(2)SO(4) can not be used why ?
Text Solution
|
When freshly precipitated Fe(OH)(3) is shaken with aqueous solution of...
Text Solution
|
A difference between diffusion and osmosis is
Text Solution
|
2-56 g of sulphur present in 100 mL of solution in colloidal form show...
Text Solution
|
Why does a secondary rainbow have inverted colours ?
Text Solution
|
on adding AgNO(3) solution into KI solution , a negatively charged col...
Text Solution
|
The extent of adsorption of a gas depends upon the
Text Solution
|
Which of the following gases can be liquefied easily ?
Text Solution
|
The critical temperature of O(2) and N(2) are 155K and 126 K respecti...
Text Solution
|
Gelatin is generally added to ice creams. Why?
Text Solution
|
Which one of the following acts as the best coagulating agent for ferr...
Text Solution
|
Lyophilic sols are more stable than lyophobic sols because their parti...
Text Solution
|
Artificial rain can be caused by spraying charged dust particles over ...
Text Solution
|
Ferric hydroxide sol is more readily conagulated by Na(3)PO(4) in comp...
Text Solution
|
Delta is generally formed wheere river meets the ocean. How will you a...
Text Solution
|
The layer of fat in the pans used for manufacturing soaps can be remov...
Text Solution
|
Which out of the following solution having the same concentration will...
Text Solution
|
100 mL of a standard sol required 240 mg of starch for its protection ...
Text Solution
|
Adsorption is always exothermic in nature , Do tor agree ?
Text Solution
|
Why does leather get hardened after tanning?
Text Solution
|