Question

9. Study the following table and choose the correct option: Salt - Parent Acid - Parent Base - Nature of Salt (a) Soidum Chloride - HCI - NaOH - Basic (b) Sodium Carbonate - H2CO3 - NaOH - Neutral (c) Sodium Sulphate - H2SO4 - NaOH - Acidic (d) Sodium Acetate - CH3COOH - NaOH - Basic​

Answer 1

(b) Sodium Carbonate -H2Co3-NaOH

Answer 2

Final answer:

The correct answer is ​option (d) Sodium acetate – $CH_{3}COOH$ – $NaOH$ – Basic.

Given that: We are given a table.

To find: We have to find the correct answer.

Explanation:

Sodium acetate – $CH_{3}COOH$ – $NaOH$ – Basic​:

• Sodium hydroxide ($NaOH$) and acetic acid ($CH_{3}COOH$) react with a salt sodium acetate ($CH_{3}COONa$) and water is formed.

The balanced chemical equation:

$NaOH(aq)+CH_{3}COOH(aq)$ ──→ $CH_{3}COONa(aq)+H_{2}O(l)$

• $NaOH$ is a strong base while $CH_{3}COOH$ is a weak acid, therefore $CH_{3}COONa$ is basic salt.

Hence, the required answer is option (d) Sodium acetate – $CH_{3}COOH$ – $NaOH$ – Basic.

Sodium chloride – $HCI$ – $NaOH$ – Basic:

The balanced chemical equation:

$NaOH(aq)+HCl(aq)$ ──→ $NaCl(aq)+H_{2}O(l)$

• $HCl$ is an acid and $NaOH$ is a base, this process is the neutralisation between an acid and a base, in fact, the combination of $H^{+}$ and $OH^{-}$ ions to form water.

$H^{+}(aq)+OH^{-} (aq)$ ──→ $H_{2}O (l)$

• $NaCl$ is a neutral salt.

Hence, option (a) Sodium chloride – $HCI$ – $NaOH$ – Basic, is the wrong answer.

Sodium carbonate – $H_{2}CO_{3}$ – $NaOH$ – Neutral:

• Sodium carbonate ($Na_{2}CO_{3}$) is a basic salt, not a neutral salt.

$NaOH$ is a strong base, while $H_{2}CO_{3}$ is a weak acid resulting in the formation of basic $Na_{2}CO_{3}$ salt.

• The reaction: $2NaOH (aq)+H_{2}CO_{3}(aq)$ ──→ $Na_{2}CO_{3}(aq)+H_{2}O(l)$

Hence, option(b) Sodium carbonate – $H_{2}CO_{3}$ – $NaOH$ – Neutral, is the wrong answer.

Sodium sulphate – $H_{2}SO_{4}$ – $NaOH$ – Acidic:

• Sodium sulphate ($Na_{2}SO_{4}$) is a neutral salt with a $p^{H}$ of 7.

• The reaction: $H_{2}SO_{4}(aq) + 2NaOH(aq)$ ──→ $Na_{2}SO_{4}(aq) + 2H_{2}O(l)$

Hence, option(c) Sodium sulphate – $H_{2}SO_{4}$ – $NaOH$ – Acidic, is the wrong answer.

To know more about the concept please go through the links

https://brainly.in/question/26623828

https://brainly.in/question/33859657

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