Selina solutions for Concise Chemistry [English] Class 10 ICSE chapter 4 - Analytical Chemistry: Uses of Ammonium Hydroxide and Sodium Hydroxide [Latest edition]

What do you understand by the following:

Analysis

What do you understand by the following:

Qualitative analysis

What do you understand by the following:

Reagent

What do you understand by the following:

Precipitation

Write the probable colour of the following salt:

Iron (III) chloride

Write the probable colour of the following salt:

Potassium nitrate

Write the probable colour of the following salt:

Ferrous sulphate

Write the probable colour of the following salt:

Aluminium acetate

Name the probable cation present based on the following observation:

White precipitate insoluble in NH₄OH but soluble in NaOH.

Name the probable cation present based on the following observation:

Blue coloured solution.

Name the metal hydroxides which are : 
(a) Insoluble (b) Soluble in
(i) Caustic soda solution (ii) Ammonium hydroxide solution.

What do you observe when ammonium salt is heated with caustic soda solution?

How will you distinguish NH₄OH solution from NaOH solution?

Why the alkali is added drop by drop to the salt solution?

Write balanced equation reaction of sodium hydroxide solution with iron (III) chloride solution.

Write balanced equation copper sulphate solution with ammonium hydroxide solution.

Write the probable colour of the following salt:

Ferrous salts

Write the probable colour of the following salt:

Ammonium salts

Write the probable colour of the following salt:

Cupric salts

Write the probable colour of the following salt:

Calcium salts

Write the probable colour of the following salt:

Aluminium Salts

Name

a metallic hydroxide soluble in excess of NH₄OH.

Name a metallic oxide soluble in excess of caustic soda solution.

Name a strong alkali.

Name a weak alkali.

Name two colourless metal ions.

Name two coloured metal ions.

Name a metal that evolves a gas which burns with a pop sound when boiled with alkali solutions.

Name two bases which are not alkalis but dissolves in strong alkalis.

Name : 

a coloured metallic oxide which dissolves in alkalis to yield colourless solutions.

Name a colourless cation not a representative element.

Write balanced equation for a metal that evolves a gas which burns with a pop sound when boiled with alkali solutions.

Write balanced equation for a coloured metallic oxide which dissolves in alkalis to yield colourless solutions.

What happens when ammonia solution is added first dropwise and then in excess to the following solution:

CuSO₄

Write a balanced equation for this reaction.

What happens when ammonia solution is added first dropwise and then in excess to the following solution:

ZnSO₄

Write a balanced equation for this reaction.

What happens when ammonia solution is added first dropwise and then in excess to the following solution:

FeCl₃

Write a balanced equation for this reaction.

What do you observe when caustic soda solution is added to the following solution, first a little and then in excess:

FeCl₃ 

Write a balanced equation for this reaction.

What do you observe when caustic soda solution is added to the following solution, first a little and then in excess:

ZnSO₄

Write a balanced equation for this reaction.

What do you observe when caustic soda solution is added to the following solution, first a little and then in excess:

Pb(NO₃)₂

Write balanced equation for this reaction.

What do you observe when caustic soda solution is added to the following solution: first a little and then in excess:

CuSO₄

Write a balanced equation for this reaction.

Name the chloride of a metal which is soluble in excess of ammonium hydroxide. Write equation for the same.

On adding dilute ammonia solution to a colourless solution of a salt, a white gelatinous precipitate appears. This precipitate however dissolves on addition of excess of ammonia solution. Identify (choose from Na, Al, Zn, Pb, Fe)

Which metal salt solution was used?

On adding dilute ammonia solution to a colourless solution of a salt, a white gelatinous precipitate appears. This precipitate however dissolves on addition of excess of ammonia solution. Identify (choose from Na, Al, Zn, Pb, Fe)

What is the formula of the white gelatinous precipitate obtained?

Name a yellow monoxide that dissolves in hot and concentrated caustic alkali.

Name a white, insoluble oxide that dissolves when fused with caustic soda or caustic potash.

Name:

a compound containing zinc in the anion

Colour of an aqueous solution of copper sulphate is ______.

Colour of the precipitate formed on adding NaOH solution to iron (II) sulphate solution is ______.

A metal which produces hydrogen on reacting with alkali as well as with acid.

The salt solution which does not react with ammonium hydroxide is ______.

What do you observe when freshly precipitated aluminium hydroxide reacts with caustic soda solution? Give balanced equation.

You are provided with two reagent bottles marked A and B. One of which contains NH₄OH solution and the other contains NaOH solution. How will you identify them by a chemical test?

Distinguish by adding:

Sodium hydroxide solution and ammonium hydroxide solution to calcium salt solution and lead salt solution.

Distinguish by adding:

Sodium hydroxide solution and ammonium hydroxide solution to lead nitrate solution and zinc nitrate solution.

Distinguish by adding:

Sodium hydroxide solution and ammonium hydroxide solution to copper salt solution and ferrous salt solution.

Distinguish by adding:

Sodium hydroxide solution and ammonium hydroxide solution to Fe(II) salt solution and Fe(III) salt solution.

Distinguish by adding:

Sodium hydroxide solution and ammonium hydroxide solution to ferrous nitrate and lead nitrate.

What is observed when hot, concentrated caustic soda solution is added to zinc? Write a balanced equation.

What is observed when hot, concentrated caustic soda solution is added to aluminium? Write a balanced equation.

What do you understand by amphoteric oxide?

Give the balanced equations for the reaction with two different amphoteric oxides with a caustic alkali.

Name the products formed when the reaction with two different amphoteric oxides with a caustic alkali.

Write a balanced equation for the following conversion:

\[\ce{ZnSO4 ->[A]Zn(OH)2->[B]Na2ZnO2}\]

Write a balanced equation for the following conversion:

\[\ce{CuSO4 ->[A]Cu(OH)2 ->[B] [Cu(NH3)4]SO4}\]