Calculate with what amount of hydrochloric acid in moles 0.1 mol of aluminum can react?

We write down the equation of a chemical reaction:

2 Al + 6HCl = 2AlCl3 + 3H2;

It can be seen from the equation that 2 moles of aluminum react with 6 moles of hydrochloric acid. Provided that aluminum is 0.1 mol, that is, 20 times less (2 / 0.1 = 20), then hydrochloric acid will be required 20 times less.

6/20 = 0.3 mole.

You can solve the problem in another way. The ratio in the reaction of the number of moles of aluminum and hydrochloric acid is 2/6 or 1/3. This means that the number of moles of acid should be 3 times more than moles of aluminum.

0.1 * 3 = 0.3 mole.