Identification of Ions

IMPORTANT

Identification of Ions: Overview

In this topic, we will be provided with an experiment for the detection of anions and cations. We will discuss the procedure of the experiment, along with the observation table. Questions are also provided here for practice.

Important Questions on Identification of Ions

MEDIUM
IMPORTANT

When a solution of mixture having two inorganic salts was treated with freshly prepared ferrous sulphate in acidic medium, a dark brown ring was formed whereas on treatment with neutral FeCl3, it gave deep red colour which disappeared on boiling and a brown red ppt was formed. The mixture contains

EASY
IMPORTANT

The colour of product obtained in the test of bromide ion with silver nitrate is:

HARD
IMPORTANT

What is silver nitrate test for chloride ion? Give reaction of AgNO3 and HCl.

HARD
IMPORTANT

The salt that cannot release reddish brown gas when heated in a dry test tube:

HARD
IMPORTANT

_____ salts do not form red fumes with acidified dichromate. 

HARD
IMPORTANT

All halogens respond to chromyl chloride test.

MEDIUM
IMPORTANT

The white precipitate formed in the reaction of lead acetate and sodium sulphate is _____. 

EASY
IMPORTANT

The colour of the precipitate formed during the reaction between lead acetate and sulphate ion is:

MEDIUM
IMPORTANT

Write a reaction between lead acetate and sodium sulphate.

HARD
IMPORTANT

In brown ring test, the bown colour of the ring is due to 

HARD
IMPORTANT

Explain the formation of a brown ring when NO gas is reacted with ferrous sulphate.

EASY
IMPORTANT

Heat a salt with copper turnings and concentrated sulphuric acid. The evolution of reddish-brown fumes is due to:  

EASY
IMPORTANT

The colour of the nitrogen dioxide gas is _____.

MEDIUM
IMPORTANT

On heating the salt reddish brown vapours are obtained that turn acidified ferrous sulphate brown. The anion is:

EASY
IMPORTANT

A gas that is on heating liberated has a pungent smell and bleaching action is:

EASY
IMPORTANT

When salt is heated the presence of chloride ions indicates, if the colour of the gas is _____. 

EASY
IMPORTANT

When concentrated sulphuric acid is added to the sample, a colourless gas with a pungent smell and dense white fumes with ammonium hydroxide. The possible anion is:

EASY
IMPORTANT

_____ is the colour of the product obtained in the test of bromide ion with silver nitrate.

EASY
IMPORTANT

The product obtained in the test of bromide ion with silver nitrate:

MEDIUM
IMPORTANT

Explain silver nitrate test for bromide ions.