Question

what are the indicators that can be used to identify alkali?​

Answer 1

Answer:

Litmus, phenolphthalein, and methyl orange

Explanation:

Indicators are substances that change colour when they are added to acidic or alkaline solutions. Litmus, phenolphthalein, and methyl orange are all indicators that are commonly used in the laboratory.

Answer 2

The indicators used to identify alkali are litmus, phenolphthalein, and methyl orange.

Explanation:

• Indicators are substance or paper-like materials which added or dipped into acidic or alkaline solutions it turns into another colour.
• litmus indicator has two papers, red and blue litmus paper. when red litmus paper is dipped into the alkaline solution it turns blue colour.
• when blue litmus paper is dipped into the alkaline solution it remains the same.
• phenolphthalein is an indicator that is colourless in acid but pink in alkaline solution.
• methyl orange is red in an acidic solution, yellow in an alkaline solution.