Question

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( 3 ) Write the difference between Acid and alkali​

Answer 1

Answer:

Acids have a pH less than 7. Alkalis have a pH greater than 7 Neutral substances have a pH equal to 7. Metal oxides are alkaline, if soluble in water. Non-metal oxides are acidic, if soluble in water.

Answer 2

Answer:

• An acid is a substance that has a pH lower than 7. For example, hydrochloric acid, sulphuric acid, citric acid, ethanoic acid (vinegar). A base is a substance that neutralises an acid – those that dissolve in water are called alkalis. An alkali is a soluble substance with a pH higher than 7.