pH of Salts

Q. CH3COOH + NaOH $\to$ CH3COONa +H2O
The pH of the above reaction will be___.

1. Neutral
2. Alkaline
3. Acidic
4. None of these

Q.

Is${\mathrm{Na}}_2{\mathrm{CO}}_3$ an acid or base?

Q.

When Ba(OH)₂ is mixed with NH₄Cl then why BaCl₂, NH₃ and H₂O is formed and not BaCl₂ and NH₄OH?

Q. The chemical formula of Nessler's reagent is .

1. $H_{2}NHgOHgI$
2. $K_2\left[Hg{I}_4\right]$
3. $[FeS{O}_4.NO]$

Q.

Differentiate between a weak acid and a weak base.

Q.

The salt which will give an acidic solution on dissolving in water is :

(a) $KCl$

(b) $N{H}_{4}Cl$

(c) $N{a}_{2}C{O}_3$

(d) $C{H}_{3}COONa$

Q.

What is the role of tartaric acid in baking powder?

Q.

When a solution of sodium sulphate is added to a solution of barium chloride, a white precipitate appears. The white precipitate is due to formation of:

1. Barium sulphide

2. Barium chloride

3. Barium sulphate

4. Sodium chloride

Q.

How can we convert baking soda to baking powder? What makes cakes so soft, spongy and fluffy?

Q. What are strong acids and bases in chemistry?

Q.

Write the chemical formula of ammonium chloride. Explain why an aqueous solution of ammonium chloride is acidic in nature? Illustrate your answer with the help of a chemical equation.

Q.

Why pure water is not a strong electrolyte?

Q.

What is the definition of acidic salts?

Q.

Fill in the missing data in the following table

	Salts obtained from
	Name of salt	Formula	Base	Acid
1.	Ammonium Chloride	${\mathrm{NH}}_4\mathrm{Cl}$	${\mathrm{NH}}_4\mathrm{OH}$	(i)_____
2.	Copper Sulphate	(ii)______	(iii)______	${\mathrm{H}}_2{\mathrm{SO}}_4$
3.	Sodium Chloride	$\mathrm{NaCl}$	$\mathrm{NaOH}$	(iv)_____
4.	Magnesium Nitrate	$\mathrm{Mg}{\left({\mathrm{NO}}_3\right)}_2$	(v)______	${\mathrm{HNO}}_3$
5.	Potassium Sulphate	${\mathrm{K}}_2{\mathrm{SO}}_4$	(vi)_______	(vii)______
6.	Calcium Nitrate	$\mathrm{Ca}{\left({\mathrm{NO}}_3\right)}_2$	$\mathrm{Ca}{\left(\mathrm{OH}\right)}_2$	(viii)_______

Q.

What is the chemical name for common salt?

Q.

The salt whose aqueous solution will turn blue litmus to red is :

(a) ammonium sulphate

(b) sodium acetate

(c) sodium chloride

(d) potassium carbonate

Q. Sodium hydroxide, NaOH, is an example of a:

1. strong acid
2. strong base
3. weak acid
4. weak base

Q. Give a chemical test to distinguish between :
(a) dilute sulphuric acid and dilute hydrochloric acid.
(b) dilute sulphuric acid and concentrated sulphuric acid.
[4 MARKS]

Q.

Name the substance which is used to absorb moisture from the air.

Q.

The aqueous solution of one of the following salts will turn red litmus to blue. This salt is :

(a) potassium sulphate

(b) sodium sulphate

(c) sodium chloride

(d) potassium carbonate

Q.

In a bakery . the use of baking powder is essential. Why ?

Q.

Define hygroscopic , efflorescence , deliquenscene

Q.

What is the pH value of potassium nitrate salt?

1. Less than 7

2. Greater than 7

3. 7

Q.

A solution has a pH value of 11. What kind of a substance is it?

1. Weak base

2. Strong base

3. Weak acid

4. Strong acid

Q.

The salt which will give a neutral solution on dissolving in water will be :

(a) $C{H}_{3}COONa$

(b) $N{H}_{4}Cl$

(c) $KCl$

(d) $N{a}_{2}C{O}_3$

Q.

Write the balanced chemical equations to prepare sodium sulphate using dilute sulphuric acid.

Q. Which of the following is a neutral salt?

1. Sodium acetate
2. Ammonium chloride
3. Sodium sulphate
4. Ammonium sulphate

Q.

The aqueous solution of one of the following salts will turn phenolphthalein indicator pink. This salt is :

(a) $KCl$

(b) $K_{2}S{O}_4$

(c) $K_{2}C{O}_3$

(d) $KN{O}_3$

Q.

Ammonia gas is produced when solid Ammonium Chloride is heated with

1. Calcium Hydroxide

2. Calcium Sulphate

3. Hydrochloric Acid

4. Magnesium Nitrate

Q.

Sample paper of acids bases and salts full chapter