Reaction of Acids with Metal Carbonates and Bicarbonates

Q.

When carbon dioxide is passed through lime water, it turns milky. Why?

Q.

Explain why the aqueous solution of sodium carbonate is alkaline?

Q. A solution X reacts with crushed egg-shells to produce a gas which turns lime water milky. The solution X is:

1. NaCl
2. HCl
3. LiCl
4. KCl

Q.

What is the nature of the new product which is formed by the action of water on quick lime?

1. Amphoteric

2. Basic

3. Neutral

4. Acidic

Q.

State what you would observe when: Dilute hydrochloric acid is added to calcium carbonate.

Q. What are the products obtained when an acid reacts with a metal carbonate?

1. Salt and water
2. Salt and hydrogen gas
3. Salt, water and carbon dioxide
4. Salt and oxygen gas

Q. What is the use of hydrogen peroxide in electrolysis?

Q.

Complete the following reaction:

${\text{Na}}_2{\text{CO}}_3\text{(s)}+{\text{H}}_2{\text{SO}}_4\text{(aq)}\to ?$

1. $N{a}_{2}C{O}_3+H_{2}O+C{O}_2$
2. $N{a}_{2}S{O}_4+H_{2}O$
3. $N{a}_{2}S{O}_4+C{O}_2$
4. $N{a}_{2}S{O}_4+H_{2}O+C{O}_2$

Q. Identify the products of the given reaction.
${\text{Na}}_2{\text{CO}}_3\text{(aq)}+{\text{H}}_2{\text{SO}}_4\text{(aq)}\to ?$

1. ${\text{Na}}_2{\text{SO}}_4\text{(aq)}+{\text{H}}_2\text{O}\text{(l)}$
2. ${\text{Na}}_2{\text{SO}}_4\text{(aq)}+{\text{CO}}_2\text{(g)}$
3. ${\text{Na}}_2{\text{SO}}_4\text{(aq)}+{\text{H}}_2\text{O(l)}+{\text{CO}}_2\text{(g)}$
4. ${\text{NaHSO}}_4\text{(aq)}+{\text{H}}_2\text{O(l)}+{\text{CO}}_2\text{(g)}$

Q. All metal carbonates and ................. react with acids to gives corresponding salt, carbon dioxide and water.

1. $H_{2}O$
2. None of these
3. $HN{O}_3$
4. hydrogen carbonates
   

Q. What are the products obtained when acids react with a metal carbonate?

1. Hydrogen
2. Carbon dioxide
3. Salt
4. Water

Q.

Give the action of dilute acids on metal hydrogen carbonates:

$\mathrm{Ca}{\left({\mathrm{HCO}}_3\right)}_2+\mathrm{HCl}\to$

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

Q. Rhea added an oxide Y through water and obtained a compound, which turned blue litmus red. She passed the same oxide Y through limewater and observed that the colour of limewater changed to milky-white. Identify Y.

1. Magnesium oxide
2. Carbon dioxide
3. Nitrous oxide
4. Sulphur dioxide

Q. During which reaction dihydrogen gas is not produced under normal conditions?

1. Metal $+$ Water
2. Metal $+$ dilute hydrochloric acid
3. Metal $+$ dilute nitric acid
4. Metal $+$ dilute sulphuric acid

Q. What are the products of the reaction, $C{H}_{3}COOH+N{a}_{2}C{O}_3\to$ ?

1. $NaOH,C_2{H}_{5}OH,O_2,H_{2}O$
2. $C{H}_{3}COONa,C{O}_2,H_{2}O$
3. $C{H}_{3}COONa,H_{2}O$
4. $NaOH,C_2{H}_{4}OH,C{O}_2,H_{2}O$

Q. What happens when Hydrogen Chloride reacts with atmospheric water vapour?

1. Red fumes are formed.
2. White fumes are formed.
3. Green fumes are formed.
4. The gas formed is colourless.

Q. $C{O}_2$ is passed through lime water. Initially the solution turns milky and then becomes clear upon continued bubbling of $C{O}_2$. The clear solution is due to the formation of:

1. $CaO$
2. $Ca(OH{)}_2$
3. $Ca(HC{O}_3{)}_2$
4. $CaC{O}_3$

Q. Which of the following gas is released when an acid reacts with metal carbonate?

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

Q. What are the products obtained when an acid reacts with a metal carbonate?

1. Salt and water
2. Salt and hydrogen gas
3. Salt, water and carbon dioxide
4. Salt and oxygen gas

Q. Give a balanced equation for a direct combination reaction involving:
a) Two elements – one of which is a neutral gas and the other a yellow non-metal
b) Two elements – one of which is a neutral gas and the other a monovalent metal
c) Two compounds – resulting in formation of a weak acid

Q.

Do basic solutions also have $H^{+}$(aq) ions? If yes, then why are these basic?