Question

The figure shows a set-up by a form three student to prepare a certain gas
         

1. Write an equation for the formation of gas K 
2. Give one use of gas K in the industries
3. Give one use of the resulting solution after the metal has reacted 

Answer 1

1. Ca(s) +2H₂O(l) → Ca(OH)₂(aq) + H₂(g)
2.  
   1. Welding
   2. Manufacture of HCL acid
   3. Hardening of vegetable oil into margarine
   4. Manufacture of Ammonia gas
3. Test for Carbon IV oxide