Neutralisation Reaction

Q.

What type of chemical reaction takes place when Ammonia and Hydrogen chloride are mixed?

Q.

What is an example of an antacid?

Q.

can salt be acidic , basic or neutral ?

Q.

NaOH solution was added to HCl solution. write the equation and result

Q.

Is ammonium chloride an acidic salt or a basic salt ?

Q.

Which indicator is suitable for titration of $\mathrm{HCl}\mathrm{and}\mathrm{NaOH}$?

Q.

Identify the type of reaction $\underset{\mathrm{Hydrochloric}\mathrm{acid}}{\mathrm{HCl}\left(\mathrm{aq}\right)}+\underset{\mathrm{Sodium}\mathrm{hydroxide}}{\mathrm{NaOH}\left(\mathrm{aq}\right)}\to \underset{\mathrm{Sodium}\mathrm{chloride}}{\mathrm{NaCl}\left(\mathrm{s}\right)}+\underset{\mathrm{Water}}{{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)}$

Q. What information do you get from the equation?
${\text{H}}_2+{\text{Cl}}_2\to 2\text{HCl}$

Q.

Complete the following reaction:

$\text{HCl}\text{(aq)}+\text{NaOH}\text{(aq)}\to ?$

1. $\text{NaCl}+{\text{H}}_2$

2. ${\text{Na}}_2\text{O}+\text{HCl}$

3. $\text{NaCl}+{\text{H}}_2\text{O}$

4. $\text{Na}+{\text{H}}_2\text{O}$

Q.

What happens when a solution of an acid is mixed with a solution of a base in a test tube?

(i) The temperature of the solution increases

(ii) The temperature of the solution decreases

(iii) The temperature of the solution remains the same

(iv) Salt formation takes place

1. (i) only

2. (i) and (iii)

3. (ii) and (iii)

4. (i) and (iv)

Q.

We brush our teeth with toothpaste that are basic in nature. Explain why? [3 MARKS]

Q.

Is the salt found in our oceans acidic, basic or neutral salt?

Q.

Two uses of magnesium hydroxide

Q.

Are $\mathrm{HCl}$ and $\mathrm{NaCl}$ a buffer solution?

Q.

An acid reacts with a base to form __ and water.

Q.

Why is it advised to rub baking soda at the body area bitten by an ant?

Q.

If the Acid is strong and Base is weak. Will there be a neutralisation reaction?

Q. Why is an antacid tablet taken when you suffer from acidity ?

Q.

The reaction between an acid and a base to form a salt is called ______.

1. Combination

2. Neutralization

3. Decomposition

4. Addition

Q. In a chemical reaction the undergo chemical changes to form new .

1. Products
2. Catalysts
3. Reactants
4. Acids

Q.

Neutralisation reaction is an example of ______ reaction.

1. Exothermic

2. None of the above

3. Endothermic

4. Decomposition

Q.

Question 6 (iii)
Mark ‘T’ if the statement is true and ‘F’ if it is false:

(iii) Sodium hydroxide and hydrochloric acid neutralise each other and form common salt and water.

Q.

Calamine is acidic or basic ?

Q.

What is exothermic and an endothermic reaction?
Amongst the following reactions, identify the exothermic reaction and the endothermic reaction:
1. Heating coal in air to form carbon dioxide.
2. Heating limestone in lime kiln to form quick lime. [3 MARKS]

Q. Is there any base to neutralize citric acid ? If there any base then what is it

Q.

Why does pink colour appear on gradually adding sodium hydroxide to a solution of acid having 2-3 drops of phenolphthalein?

Q.

a)What are salts? Are they acidic, basic or neutral? Give examples.
b)Give names of the acids found in the following substances i. Vinegar ii. Curd. [5 MARKS]

Q. When sodium carbonate reacts with hydrochloric acid, the gas evolved is

1. Carbon dioxide
2. Hydrogen
3. Nitrogen
4. Oxygen

Q.

How does Sodium Hydroxide Neutralize Acid?

Q.

Question 25

Paheli observed that most of the fish in the pond of her village were gradually dying. She noticed that waste from a factory flowing into the pond which probably caused the fish to die.
(a) Explain why the fish were dying?
(b) If the factory waste is acidic in nature, how can it be neutralised?