Take some water in a beaker, add some quick lime (calcium oxide) and s

1.	Take some water in a beaker, add some quick lime (calcium oxide) and stir it. Take some clear solution in a test tube from the beaker and add a drop of red litmus solution. (a) What do you observe? (b) What is the substance formed when calcium oxide reacts with water? Complete the chemical equation of the reaction. CaO + H2O → …… (c) What do you infer about the nature of this substance from this litmus test?
Answer» (a) The solution turns to blue (b) CaO + H₂O → Ca(OH)₂ (c) Ca(OH)₂ is alkaline in nature

Take some water in a beaker, add some quick lime (calcium oxide) and stir it. Take some clear solution in a test tube from the beaker and add a drop of red litmus solution. (a) What do you observe? (b) What is the substance formed when calcium oxide reacts with water? Complete the chemical equation of the reaction. CaO + H2O → …… (c) What do you infer about the nature of this substance from this litmus test?

Answer»

(a) The solution turns to blue

(b) CaO + H₂O → Ca(OH)₂