Acid Base Salts Class 10
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Questions and Answers

What is the conjugate base of the weak acid NH₃?

NH₂⁻

A salt has a pH of 9. What can be inferred about the salt?

The salt is basic in nature.

What is the pH of a solution formed by the reaction of a strong acid and a strong base in equivalent amounts?

7

What is the common ion effect in acid-base equilibria?

<p>The suppression of the dissociation of a weak acid or weak base by the presence of a common ion.</p> Signup and view all the answers

What is the difference between a strong acid and a weak acid?

<p>A strong acid completely dissociates in water, while a weak acid only partially dissociates.</p> Signup and view all the answers

Study Notes

Acid-Base Chemistry

  • The conjugate base of the weak acid NH₃ is NH₂⁻ (amide ion).

pH of a Salt Solution

  • If a salt has a pH of 9, it can be inferred that the salt is a basic salt, likely formed from the reaction of a strong base with a weak acid.

pH of a Strong Acid-Strong Base Reaction

  • The pH of a solution formed by the reaction of a strong acid and a strong base in equivalent amounts is 7, which is neutral.

The Common Ion Effect

  • The common ion effect in acid-base equilibria refers to the suppression of the ionization of a weak acid or a weak base by the presence of a common ion, which is an ion that is already present in the solution.

Strong vs. Weak Acids

  • A strong acid is completely dissociated in water, releasing all its hydrogen ions (H⁺), whereas a weak acid only partially dissociates, releasing some of its hydrogen ions.

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Description

Test your knowledge of acid-base chemistry, including conjugate bases, pH levels, and the common ion effect, as per the 10th class curriculum.

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