Tag: acids with carbonates

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

$ 2H _3PO _4 + 3Na _2CO _3 \rightarrow $
What are the products formed?

  1. $2NaPO _4 + 3H _2O + 3CO _2$
  2. $2Na _3PO _4 + 3H _2O + 3CO _2$
  3. $2Na _3PO _4 + H _2O + 3CO _2$
  4. $2Na _3PO _3 + 3H _2O + 3CO _2$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

On adding a carbonate to an acid, effervescence from carbon dioxide gas is released along with the formation of water and salt. $CO _2$ turns lime water milky.
Phosphoric acid + sodium carbonate $\rightarrow$ sodium phosphate + water + carbon dioxide
$ 2H _3PO _4 + 3Na _2CO _3 \rightarrow 2Na _3PO _4 + 3H _2O + 3CO _2 $

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

A solution reacts with crushed egg-shells to give a gas that turns lime-water milky. The solution contains:

  1. $NaCl$
  2. $HCl$
  3. $LiCl$
  4. $KCl$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Crushed egg shell has composition $CaCO _3$ reacts with acid and gives gas $CO _2$ which turns lime water $(Ca(OH) _2)$ milky by producing $CaCO _3$ again. The acid in given options is $HCl$. 

$CaCO _3 + 2HCl \rightarrow CaCl _2 + CO _2 + H _2O $
$Ca(OH) _2 + CO _2 \rightarrow CaCO _3 + H _2O$

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

Which of the following represents the products obtained when, $HCl$ reacts with sodium hydrogen carbonate?

  1. $NaCl$, $H _2O$ and $CO _2$
  2. $NaCl$ and $CO _2$
  3. $NaOH$ and $CO _2$
  4. $NaOH$, $H _2O $ and $CO _2$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

When $HCl$ reacts with sodium hydrogen carbonate, the products obtained are $NaCl,$ $H _2O$ and $CO _2$.
$\displaystyle NaHCO _3 + HCl \rightarrow NaCl + H _2O + CO _2$

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

Which of the following represents the products obtained when $HCl$ reacts with calcium carbonate?

  1. $CaCl _2$, $H _2O$ and $CO _2$
  2. $CaCl _2$ and $CO _2$
  3. $Ca(OH) _2$ and $CO _2$
  4. $Ca(OH) _2$, $H _2O $ and $CO _2$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

When $HCl$ reacts with calcium carbonate, the products obtained are $CaCl _2$, $H _2O$ and $CO _2$.
$\displaystyle CaCO _3 + 2HCl \rightarrow CaCl _2 + H _2O + CO _2$

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

When an acid reacts with a metal carbonate or metal hydrogen carbonate, it gives the corresponding salt, gas and product. Name the gas and product?

  1. Carbon dioxide, Water

  2. Carbon dioxide, Salt

  3. Hydrogen, Salt

  4. All of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Acid + Metal carbonate  $\longrightarrow$ Salt + Water + Carbon dioxide

CaCO$ _3$ (calcium carbonate-metal carbonate) + 2HCl $\longrightarrow$ CaCl$ _2$ (calcium chloride-salt) + H$ _2$O + CO$ _2$