Tag: acids with carbonates

Questions Related to acids with carbonates

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

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

  1. $2NaPO _4 + 3H _2O + 3CO _2$

  2. $2Na _3PO _4 + 3H _2O + 3CO _2$

  3. $2Na _3PO _4 + H _2O + 3CO _2$

  4. $2Na _3PO _3 + 3H _2O + 3CO _2$

Show answer
Correct Option: B
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 $

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

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

  1. $NaCl$

  2. $HCl$

  3. $LiCl$

  4. $KCl$

Show answer
Correct Option: B
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 $
$Ca(OH) _2 + CO _2 \rightarrow CaCO _3 + H _2O$

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

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

  1. $NaCl$, $H _2O$ and $CO _2$

  2. $NaCl$ and $CO _2$

  3. $NaOH$ and $CO _2$

  4. $NaOH$, $H _2O $ and $CO _2$

Show answer
Correct Option: A
Explanation:

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

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

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

  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 $CO _2$

Show answer
Correct Option: A
Explanation:

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

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?

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

  1. Carbon dioxide, Water

  2. Carbon dioxide, Salt

  3. Hydrogen, Salt

  4. All of the above

Show answer
Correct Option: A
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$

Choose the correct answer form the alternatives given.
The chemical name of baking soda is

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

  1. Sodium carbonate

  2. Sodium bicarbonate

  3. Sodium chloride

  4. Sodium nitrate

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Correct Option: B