Please wait...
1800-212-7858 (Toll Free)
9:00am - 8:00pm IST all days
For Business Enquiry


Thanks, You will receive a call shortly.
Customer Support

You are very important to us

For any content/service related issues please contact on this toll free number


Mon to Sat - 11 AM to 8 PM

What will be the reaction between metals like sodium, potassium and calcium with cold water?

Asked by Topperlearning User 28th September 2016, 4:05 PM
Answered by Expert

Metals react with cold water to form metal hydroxide and liberate hydrogen gas.


2Na + 2H2O → 2NaOH + H2

The reaction is violent but comparatively less violent than potassium. Sodium melts into a silvery globule and darts about the water.


2K + 2H2O → 2KOH + H2↑         

The reaction is violent and exothermic. The heat liberated during the reaction ignites hydrogen.


Ca + 2H2O → Ca(OH)2 + H2

The reaction is slightly vigorous, but calcium is quite expensive. Hence, it is economically not viable.


Answered by Expert 28th September 2016, 6:05 PM
Rate this answer
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10

You have rated this answer /10

Your answer has been posted successfully!

Chat with us on WhatsApp