” Colour of litmus paper when the solution is placed in citric acid and when placed in sodium hydroxide added in citric acid solution” should be determined Concept introduction: Bases:- A base is a substance which dissolves in water to produce hydroxide ions in solution. The presence of hydroxide ion in solution is responsible for bitter taste, soapy touch, turns red litmus to blue. Acids: An acid is a substance which dissolves in water to produce hydrogen ions in solution. The presence of hydrogen ion in solution is responsible for sour taste and turns blue litmus into red. For a neutral solution, there will be no effect on litmus paper

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Chapter 7, Problem 58AP

Interpretation Introduction

Interpretation:” Colour of litmus paper when the solution is placed in citric acid and when

placed in sodium hydroxide added in citric acid solution” should be
determined

Concept introduction:

Bases:- A base is a substance which dissolves in water to produce hydroxide ions in solution. The presence of hydroxide ion in solution is responsible for bitter taste, soapy touch, turns red litmus to blue.

Acids: An acid is a substance which dissolves in water to produce hydrogen ions in solution. The presence of hydrogen ion in solution is responsible for sour taste and turns blue litmus into red.

For a neutral solution, there will be no effect on litmus paper

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