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Question
Fill in the blanks by using the correct word/ term given in the brackets.
The blue colour of litmus solution changes red by ___.
Fill in the blanks by using the correct word/ term given in the brackets.
The blue colour of litmus solution changes red by ___.
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Solution
Litmus is a water-soluble mixture of dye majorly extracted from the lichens. The litmus paper is usually absorbed into a filter paper to produce a pH indicator.
Litmus solution is used for the detection of acids and bases because it shows a visible change in colour when mixed with any acidic or basic solution. The change in colour of litmus paper is dependent on the pH.
- Under acidic conditions, the blue litmus solution appears red.
- Under basic conditions, the red litmus solution appears blue.
Thus, the blue colour of the litmus solution changes to red by acid.
Litmus is a water-soluble mixture of dye majorly extracted from the lichens. The litmus paper is usually absorbed into a filter paper to produce a pH indicator.
Litmus solution is used for the detection of acids and bases because it shows a visible change in colour when mixed with any acidic or basic solution. The change in colour of litmus paper is dependent on the pH.
- Under acidic conditions, the blue litmus solution appears red.
- Under basic conditions, the red litmus solution appears blue.
Thus, the blue colour of the litmus solution changes to red by acid.
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