Answer: No reaction will occur on adding gold metal into hydrochloric acid.
Explanation:
Noble metals are the metals which opposes chemical action on them.These metals doesn't get corrode. These metal does not react easily with acids.
The metals which comes under this category are: silver, gold, platinum, rhodium, ruthenium etc.
When gold metal is added to hydrochloric acid , no chemical reaction will take place because gold is a noble metal and they are not easily attacked by acids.
[tex]Au(s)+HCl(aq)\rightarrow [/tex] No reaction