Give balanced equation for a double decomposition reaction involving an acid and a base.
Answers
Answer:
A chemical reaction is a chemical change where substances react with each other to form a new substance.
(i) addition of dilute acid to an active metal - The test tube becomes hot and hydrogen gas is evolved, which means heat is produced.
(ii) Addition of dilute hydrochloric acid to silver nitrate - A white coloured precipitate is formed which is AgCl
(iii) Addition of water to quicklime - The solution boils and heat is produced accompanied by a hissing sound.
(iv) Thermal decomposition of mercury oxide - The colour of mercury changes from red to silvery, that is metallic.
Explanation:
Compound
→
Products
Explanation:
Decomposition reaction is under this form:
Compound
→
Products
Which means is that you have one reactant which is a compound that will give you products which could be a combination of:
Compound
→
Compound
+
Compound
Compound
→
Compound
+
element
Compound
→
element
+
element
Example:
When you heat
C
u
C
O
3
it will decompose into copper(II) oxide
C
u
O
and carbon dioxide
C
O
2
:
C
u
C
O
3
(
s
)
→
C
u
O
(
s
)
+
C
O
2
(
g
)