Tag: acids and alkalis

Quizzes (2) Questions (32)

Questions Related to acids and alkalis

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

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

  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. $CaCl _{2} + 2H _{2}O + 4CO _{2}$
Reveal answer Fill a bubble to check yourself
A Correct answer
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.

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

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

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
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 $H _2O+CO _2$
$ZnCO _3+2HNO _3\longrightarrow Zn(NO _3) _2+H _2O+CO _2$

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

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

  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. $CaCl _{2}(aq) + H _{2}O(l) + CO _{2}(g)$
Reveal answer Fill a bubble to check yourself
D Correct answer
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.

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

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

  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. $MgCl _{2}(aq) + CO _{2}(g) + 3H _{2}O(l)$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

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


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

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

_________ causes bubble formation when acid reacts with carbonates.

  1. Salt
  2. $CO _{2}$

  3. Water

  4. Oxygen
Reveal answer Fill a bubble to check yourself
B Correct answer
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.
$Acid + Metal\ carbonate \rightarrow Salt + Water + Carbon\ dioxide$

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

What is formed when acids react with carbonates?

  1. Salt

  2. Water

  3. Carbon dioxide

  4. All of above
Reveal answer Fill a bubble to check yourself
D Correct answer
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:
$Acid + Metal\ carbonate \rightarrow Salt + Water + Carbon\ dioxide$