Tag: reactions of acids and bases

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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$

Multiple choice chemistry chemistry in everyday life metal oxides and non metal oxides reactions of acids and bases properties of acids and bases

The principal products obtained on heating iodine with concentrated caustic soda solution is:

  1. $NaIO\, +\, NaI$
  2. $NaIO\, +\, NaIO _3$
  3. $NaIO _3\, +\, NaI +\ H _2O$
  4. $NaIO _4\, +\, NaI$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

On adding iodine to caustic soda(alkali), hypoiodites are formed and the peculiar smell is of iodoform and pale yellow in color.

$6NaOH + 3I _2 \longrightarrow NaIO _3 +5NaI +3H _2O$

Multiple choice chemistry chemistry in everyday life metal oxides and non metal oxides reactions of acids and bases properties of acids and bases

Metallic oxides react with ............ to give salts and water, similar to the reaction of a/an ........... with an acid, metallic oxides are said to be basic oxides.

  1. bases, base

  2. acids, base

  3. acids, acid

  4. bases, acids
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Metallic oxides react with acids to give salts and water, similar to the reaction of a base with an acid, metallic oxides are said to be basic oxides.

Multiple choice chemistry chemistry in everyday life metal oxides and non metal oxides reactions of acids and bases properties of acids and bases

'The blue-green colour of the solution is due to the formation of copper(II) chloride in the reaction' is an example of which kind of chemical reaction?

  1. Reaction of metallic oxides with acids

  2. Reaction of non-metallic oxides with acids

  3. Reaction of metallic oxides with bases

  4. Reaction of non-metallic oxides with base
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Metal oxides always reacts with acid to form salt and water. Copper oxide when reacts with $HCl$ it forms blue-green copper(II) chloride. 

$2CuO + 2HCl \rightarrow 2CuCl _2 + H _2O$