Question

H2x + 2NaOH ------Na2x +2H2O

The total mass of the reactants was 228.2 g and 156.2 of salt was produced. Calculate the moles of water produced.

Answer 1

If all the reactants were use up in the reaction

Mass is conserved

Mass of products $=$ Mass of reactants

Mass of Water $= 22.8.2-156.2$

$=72g$

One mole of water $=18g$

Number of moles of water produced

$\frac{72}{18}=4 moles$