You visited us 43 times! Enjoying our articles? Unlock Full Access!

Byju's Answer

Standard XII

Chemistry

Coagulation

Most effectiv...

Question

Most effective coagulant for a colloidal solution of arsenic sulphide in water is:

0.1 M

sodium phosphate

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

0.1 M

zinc sulphate

No worries! We‘ve got your back. Try BYJU‘S free classes today!

0.1 M

zinc nitrate

No worries! We‘ve got your back. Try BYJU‘S free classes today!

0.1 M

aluminium chloride

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A $0.1 M$ sodium phosphate
Most efficitive coagulant for a collodial solution can be identified by using Hardy Schulze law. It states that greater in the valency of the oppositely charged ion of the electrolyte being added the faster is the coagulation.
$\to$ Here Arsenic sulphide collodial solution in water in negative so it needs highest positive charged element.
$\to$ Aluminium chloride $({A l}^{+ 3}) >$ all other elements given
Ans :- Option A.

Suggest Corrections

Similar questions

Q. Calculate total molarity and molarity of all ions present in

1 l i t r e

solution containing

0.1 M

copper sulphate and

0.1 M

aluminium sulphate.

Q. Given below are word equations. Convert them into chemical equations using symbols and valencies. Balance the equations. Use appropriate signs for gases and precipitates in the reaction.
i) Zinc Sulphide

+

Oxygen gas

\to

Zinc oxide solid

+

Sulphur dioxide gas
ii) Silver nitrate solution

+

Sodium chloride solution

\to

Silver chloride precipitate

+

Sodium nitrate solution
iii) Sulphur solid

+

Concentrated nitric acid

\to

Sulphuric acid

+

Nitrogen dioxide gas

+

Water
iv) Barium chloride Solution

+

Potassium sulphate Solution

\to

Barium sulphate Precipitate

+

Potassium chloride solution
v) Silver nitrate on heating

\to

silver metal

+

nitrogen dioxide gas

+

Oxygen gas.
vi) Aluminium hydroxide

+

Nitric acid

\to

Aluminium nitrate

+

Water.

Statement: The increasing order of osmotic pressure of

0.1 M

aqueous solution containing different electrolyte is as follows

0.1 M

glucose

< 0.1 M

sodium chloride

< 0.1 M

magnesium chloride.

State whether the given statement is true or false.

Write the balanced chemical equations for the following reactions.
(A) Calcium hydroxide + Carbon dioxide → Calcium carbonate + water
(B) Zinc + Silver nitrate → Zinc nitrate + Silver
(C) Aluminium + copper chloride → Aluminium chloride + Copper
(D) Barium chloride + Potassium sulphate → Barium sulphate + Potassium chloride.

Q. Write the formula of the following compounds.
calcium hydroxide, copper chloride, iron sulphate, sodium carbonate, copper nitrate, copper oxide, lead sulphide, magnesium chloride, zinc sulphate, potassium hydroxide.

Join BYJU'S Learning Program