Advertisements
Advertisements
Question
A small piece of calcium metal is put into a small trough containing water. There is effervescence and white turbidity is formed.
Write an equation for the reaction.
Advertisements
Solution
Ca + 2H2O → Ca(OH)2 + H2
The solution turns blue.
APPEARS IN
RELATED QUESTIONS
Give an equation to express the reaction between:
Calcium and water
A small piece of calcium metal is put into a small trough containing water. There is effervescence and white turbidity is formed.
Name the gas formed in the reaction. How would you test the gas?
Hydrogen is obtained by displacement from:
- dilute sulphuric acid
- dilute hydrochloric acid
Write equations using zinc and iron.
Why does copper not show similar behavior?
Metal in the powdered form reacts very slowly with boiling water, but it decomposes in steam. Name the metal.
Write a balanced equation for the reaction named metal with (i) boiling water (ii) steam.
What do you observe when hydrogen gas is passed through a soap solution?
Helium is preferred to hydrogen for filling balloons because it is:
What do you observe when dilute sulphuric acid is added to Zinc granules.
Name the following.
A metal below iron but above copper in the activity series of metals which has no reaction with water.
Name the following.
The salt formed when aluminium reacts with potassium hydroxide, during the preparation of hydrogen from alkalis.
