Question

2H2O + 3HCl ——> 5H2O + Cl

how many moles of H2O are needed to make 3 moles of HCl?

Answer 1

Answer: 2 moles

Explanation:

We know from the equation that for every 3 moles of HCl consumed, 2 moles of water are consumed (based on the coefficients)

So, the answer is 2 moles.