Question

1 . When hydrogen burns in oxygen, water is formed; when electricity is passed through water, hydrogen and oxygen are given out. Name the type of chemical changes involved in the two cases

2 . The chemical change involving iron and hydrochloric acid illustrates a ____________ reaction.​

Answer 1

here is your ans.

1)1)

in first case :-

2H2 +O2 = 2H2O

SO, THIS IS A COMBINATION REACTION.

IN 2ND CASE :-

2H2O --------} 2H2 + O2

so, this is decomposition reaction .

2)

2hcl + Fe = fecl2 + h2

this is displacement reaction ..

hope it helps

☺☺☺☺☺☺

Answer 2

Answer:

hey Chhoti kya hua tumhe ....

Please batao?