calcium oxide reacts with water and with nitric acid.
State the formula of the calcium compund when:
(i) calcium oxide reacts with water
(ii) calcium oxide reacts with nitric acid
(i) calcium hydroxide, Ca(OH)2.
(ii) calcium nitrate, Ca(NO3)2
(i) When calcium oxide reacts with water, it forms calcium hydroxide.
The formula for calcium hydroxide is Ca(OH)2.
(ii) When calcium oxide reacts with nitric acid, it forms calcium nitrate.
The formula for calcium nitrate is Ca(NO3)2.
To determine the chemical formulas of the calcium compounds that are formed when calcium oxide reacts with water and with nitric acid, we need to understand the type of reaction that takes place.
(i) Calcium Oxide Reacts with Water:
When calcium oxide reacts with water, it undergoes a chemical reaction known as a "base-water" reaction. In this reaction, calcium oxide (CaO) acts as a base and reacts with water (H2O) to form a calcium compound known as calcium hydroxide (Ca(OH)2).
The balanced chemical equation for this reaction is:
CaO + H2O -> Ca(OH)2
(ii) Calcium Oxide Reacts with Nitric Acid:
When calcium oxide reacts with nitric acid (HNO3), it undergoes an acid-base reaction. In this reaction, calcium oxide (CaO) acts as a base and reacts with nitric acid (HNO3) to form a calcium compound known as calcium nitrate (Ca(NO3)2).
The balanced chemical equation for this reaction is:
CaO + 2HNO3 -> Ca(NO3)2 + H2O
So, the formulas of the calcium compounds that are formed when calcium oxide reacts with water and with nitric acid are:
(i) Calcium hydroxide (Ca(OH)2) when reacting with water.
(ii) Calcium nitrate (Ca(NO3)2) when reacting with nitric acid.