Question

what is alkali and acids
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Answer 1

Answer:

An acid is a substance that has a pH lower than 7. For example, hydrochloric acid, sulphuric acid, citric acid, ethanoic acid (vinegar). ... An alkali is a soluble substance with a pH higher than 7. For example, sodium hydroxide (used to make soap), potassium hydroxide, oven cleaner, toothpaste, shampoo.

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Explanation:

Answer 2

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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.