Name: Salt Solutions
Uploaded: 2019-07-19
Duration: 5 min 35 s
Description: This video discusses the neutralisation reaction between an acid and a base to form salt and water. The uses of some important salts are also explained here.

Question

Add a drop of indicators to the following substances in the table given below and record the change in colour:

Sample solution	Phenolphthalein	Blue Litmus	Red Litmus	Methyl Orange
Hydrochloric acid
Sulphuric acid
Acetic acid
Oxalic acid
Sodium hydroxide
Sodium carbonate
Ammonium hydroxide

From the observed facts, write conclusions of the results.

Accepted Answer

The colour change observed is as follows-

Sample solution Phenolphthalein Blue Litmus Red Litmus Methyl Orange

Hydrochloric acid No change Red No change Red

Sulphuric acid No change Red No change Red

Acetic acid No change Red No change Red

Oxalic acid No change Red No change Red

Sodium hydroxide Pink No change Blue Yellow

Sodium carbonate Pink No change Blue Yellow

Ammonium hydroxide Pink No change Blue Yellow

Phenolphthalein is naturally colourless but turns pink in alkaline solutions and remains colourless in acidic solutions.

Blue litmus changes to red in acidic solutions while remain unchanged in basic solutions.

Red litmus changes to blue in basic solutions while remain unchanged in acidic solutions.

Methyl orange changes to red in acidic solutions and yellow in basic solutions.

Manipur Board Solutions for Chapter: Acids, Bases and Salt, Exercise 1: Let us answer these

Manipur Board Science Solutions for Exercise - Manipur Board Solutions for Chapter: Acids, Bases and Salt, Exercise 1: Let us answer these

Questions from Manipur Board Solutions for Chapter: Acids, Bases and Salt, Exercise 1: Let us answer these with Hints & Solutions

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