Question

7. Which of the following equations represents a decomposition reaction?

a. H2O(g)→2H2O(g)+O2(g)

b. 2Ag2O(s)→4Ag(s)+O2(g)

c. Ag(s)+NaCl(aq)→AgCl(s)+Na(s)

d.
NH3(g)+HCl(g)→NH4Cl(s)


8.
Which of the following chemical equations represents a combination reaction?

a. H2O(g)→2H2O(g)+O2(g)

b. 2Ag2O(s)→4Ag(s)+O2(g)

c. Ag(s)+NaCl(aq)→AgCl(s)+Na(s)

d.

NH3(g)+HCl(g)→NH4Cl(s)​

Answer 1

Answer:

7a.H2O(g)→2H2O(g)+O2(g)

8a.H2O(g)→2H2O(g)+O2(g)

Answer 2

7. following reactions represents a decomposition reaction.....

first decomposition means A decomposition reaction is a reaction in which a compound breaks down into two or more simpler substances. The general form of a decomposition reaction is: AB→A+B.

a. H2O(g)→2H2O(g)+O2(g)

b. 2Ag2O(s)→4Ag(s)+O2(g)

8.following reactions represents a combination reaction.....

When a combination reaction occurs between a metal and a non-metal the product is an ionic solid.

d. NH3(g)+HCl(g)→NH4Cl(s)​