human
In order for the reaction 2Al + 6HCl → 2AlCl_3 + 3H_2 to occur, which of the following must be true?
gpt
Al must be above H on the activity series.
Explanation: In a reaction between two metals and a hydrochloric acid, the metal above hydrogen in the activity series needs to displace hydrogen ions in the acid for the reaction to occur. In this case, aluminum (Al) needs to be above hydrogen (H) in the activity series for the reaction 2Al + 6HCl → 2AlCl_3 + 3H_2 to happen.