Reactions Of Calcium Compunds Flashcards
What happens when more water is added to calcium hydroxide?
The calcium hydroxide dissolves, forming calcium hydroxide solution. This solution is often called limewater
How can calcium oxide, calcium carbonate and calcium hydroxide be used to neutralise soil acidity?
Some crops do not how in soil if it is too acidic, so farms need to reduce the amount of acid in the soil. They spray powered calcium oxide, calcium carbonate and calcium hydroxide over the fields to do this
Explain how calcium carbonate can be used to remove acidic gases from coal- fired power station chimneys.
It’s reducing harmful emissions and helping reduce acid rain
What is the effect of water on calcium oxide?
A lot of heat is released, which makes the water boil as it touches the calcium oxide.
Calcium oxide + water —> calcium hydroxide
CaO(s) + H2O(l) –> Ca(OH)2(s)
