Question

In the reaction MgCl2 + 2KOH Mg(OH)2 + 2KCl, how many moles of Mg(OH)2 are produced for every mole of MgCl2?

Answer 1

so in a mole ratio, you want to look at the coefficients.
The coefficient of Mg(OH)2 is 1, and the coefficient of MgCl2 is also 1.
So the mole ratio is 1 : 1