Tag: acids and alkalis

Questions Related to acids and alkalis

When marble chips are treated with $HCl $, which of the following gas is liberated?

chemistry acids and alkalis acids with carbonates reactions of acids and bases properties of acids and bases

  1. CO$ _2$

  2. O$ _2$

  3. CO

  4. NO$ _2$

Show answer
Correct Option: A
Explanation:

Reaction:

$\underbrace{CaCO _3} _{(Marble\quad chips)} +2HCl\longrightarrow CaCl _2+CO _2(g) +H _2O(l)$
So, $CO _2$ gas is liberated.

$Ca(HCO _{3}) _{2} + 2HCl \rightarrow $

chemistry acids and alkalis acids with carbonates reactions of acids and bases properties of acids and bases

  1. $CaCl _{2} + 2H _{2}O + 2CO _{2}$

  2. $2CaCl _{2} + 2H _{2}O + 2CO _{2}$

  3. $CaCl _{2} + 4H _{2}O + 2CO _{2}$

  4. $CaCl _{2} + 2H _{2}O + 4CO _{2}$

Show answer
Correct Option: A
Explanation:

$Ca(HCO _{3}) _{2} + 2HCl \rightarrow CaCl _{2} + 2H _{2}O + 2CO _{2}$ 

Metal carbonates react with  acids to give salt, carbon dioxide and water.

Acids react with carbonate and bicarbonates to liberate $CO _{2}$.

chemistry acids and alkalis acids with carbonates reactions of acids and bases properties of acids and bases

  1. True

  2. False

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Correct Option: A
Explanation:

The metal ion displaces the proton $(H^+)$ from the acid and a salt is formed along with carbonic acid $(H _2CO _3)$

However, $(H _2CO _3)$ is unstable in atmospheric conditions.
$MgCO _3+2HCl\longrightarrow MgCl _2+H _2CO _3$ (Equation $01$)
$H _2CO _3\longrightarrow H _2O+CO _2$ (Equation $02$)
By adding $01$ and $02$
$MgCl _2+2HCl\longrightarrow MgCl _2+H _2O+CO _2$
Similarly,
$Na _2CO _3+H _2SO _4\longrightarrow Na _2SO _4+H _2CO _3$
here, $H _2CO _3$ is split into $H _2O+CO _2$
$ZnCO _3+2HNO _3\longrightarrow Zn(NO _3) _2+H _2O+CO _2$

Metal carbonates react with _______ to give salt, carbon dioxide and water.

chemistry acids and alkalis acids with carbonates reactions of acids and bases properties of acids and bases

  1. acids

  2. bases

  3. alkalis

  4. non-metals

Show answer
Correct Option: A
Explanation:

Metal carbonates react with acids to give salt, carbon dioxide and water.
$NaHCO _{3} + 2HCl (dil) \rightarrow NaCl + H _{2}O + CO _{2(g)}$.

Choose the correct option to complete the reaction.
$CaCO _{3}(s) + 2HCl(aq) \rightarrow $

chemistry acids and alkalis acids with carbonates reactions of acids and bases properties of acids and bases

  1. $2CaCl _{2}(aq) + H _{2}O(l) + CO _{2}(g)$

  2. $CaCl _{2}(aq) + 3H _{2}O(l) + CO _{2}(g)$

  3. $2CaCl _{2}(aq) + 4H _{2}O(l) + CO _{2}(g)$

  4. $CaCl _{2}(aq) + H _{2}O(l) + CO _{2}(g)$

Show answer
Correct Option: D
Explanation:

$CaCO _{3}(s) + 2HCl(aq) \rightarrow CaCl _{2}(aq) + H _{2}O(l) + CO _{2}(g)$ 

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

Hydrochloric acid react with carbonate to form:

chemistry acids and alkalis acids with carbonates reactions of acids and bases properties of acids and bases

  1. carbide

  2. hydride

  3. chloride

  4. none of the above

Show answer
Correct Option: C
Explanation:

Chloride
Hydrochloric acid reacts with Carbonate to form chlorides.
$2HCl+CaCo _3\rightarrow CaCl _2+H _2O+CO _2$

$2HCl{(aq)} + MgCO _{3}(s)\rightarrow$

chemistry acids and alkalis acids with carbonates reactions of acids and bases properties of acids and bases

  1. $MgCl _{2}(aq) + CO _{2}(g) + H _{2}O(l)$

  2. $MgCl _{2}(aq) + CO _{2}(g)$

  3. $MgCl _{2}(aq) + H _{2}O(l)$

  4. $MgCl _{2}(aq) + CO _{2}(g) + 3H _{2}O(l)$

Show answer
Correct Option: A
Explanation:

$(A)$  $MgCl _{2}(aq)$ + $CO _{2}(g)$ + $H _{2}O(l)$


$Reaction$ : $2HCl(aq)$ + $MgCO _{3}(s)$ $\rightarrow$ $MgCl _{2}(aq)$ + $CO _{2}(g)$ + $H _{2}O(l)$

_________ causes bubble formation when acid reacts with carbonates.

chemistry acids and alkalis acids with carbonates reactions of acids and bases properties of acids and bases

  1. Salt

  2. $CO _{2}$

  3. Water

  4. Oxygen

Show answer
Correct Option: B
Explanation:

When acids react with carbonates, such as calcium carbonate (found in chalk, limestone and marble) a salt, water and carbon dioxide are made. Carbon dioxide is formed as by product which causes bubbling during the reaction and can be detected using limewater.
$Acid + Metal\ carbonate \rightarrow Salt + Water + Carbon\ dioxide$

$H {2}SO _{4} + CuCO _{3} \rightarrow$ ___ $ + H _{2}O + CO _{2}$

chemistry acids and alkalis acids with carbonates reactions of acids and bases properties of acids and bases

  1. $CuSO _{4}$

  2. $CuSO _{3}$

  3. $CuSO _{2}$

  4. None of above

Show answer
Correct Option: A
Explanation:

All carbonates react with acids to produce salt, water and carbon dioxide gas. 
$H _{2}SO _{4} + CuCO _{3} \rightarrow CuSO _{4} + H _{2}O + CO _{2}$

What is formed when acids react with carbonates?

chemistry acids and alkalis acids with carbonates reactions of acids and bases properties of acids and bases

  1. Salt

  2. Water

  3. Carbon dioxide

  4. All of above

Show answer
Correct Option: D
Explanation:

When acids react with carbonates, such as calcium carbonate (found in chalk, limestone and marble), a salt, water and carbon dioxide are made. In general:
$Acid + Metal\ carbonate \rightarrow Salt + Water + Carbon\ dioxide$