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Class 10ScienceChemical Substances – Nature and BehaviourAcids, Bases, and SaltsEasyLevel 1

Which of the following substances generally forms an aqueous solution with a pH greater than 7?

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Answer and explanation

Correct answer: Sodium hydroxide

Sodium hydroxide is a strong base. It dissolves in water to produce hydroxide ions, \(\mathrm{OH^-}\), so its aqueous solution is basic and has a pH greater than 7. Hydrochloric acid solution is acidic, whereas sodium chloride solution and distilled water are generally neutral.

Tags

acids bases saltsph scalebasic solutionsodium hydroxideaqueous solution

Frequently asked questions

What is the correct answer to this question?

Sodium hydroxide

Why is this the correct answer?

Sodium hydroxide is a strong base. It dissolves in water to produce hydroxide ions, \(\mathrm{OH^-}\), so its aqueous solution is basic and has a pH greater than 7. Hydrochloric acid solution is acidic, whereas sodium chloride solution and distilled water are generally neutral.

Which subject and chapter does this question cover?

This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Acids, Bases, and Salts.

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