If you react 50g of HCl with unlimited magnesium hydroxide, how many grams of magnesium chloride are produced?

Answer 1

2HCl + Mg(OH)₂ ==> 2H₂O + MgCl₂

50 g HCl x 1 mol HCl / 36.5 g x 1 mol MgCl₂ / 2 mol HCl x 95.2 g MgCl₂/mol = 65.2 g MgCl₂

Using correct sig. figs. the answer should be reported to only 1 sig. fig. based on the value of 50 g.

Thus, it would be 70 g