Question

Question 2

metallic magnesium reacts with steam to produce magnesium hydroxide and hydrogen gas.
a. if 24.3 g mg are heated with 12.0 g h20, identify the limiting reactant - magnesium or water (steam)?

Answer 1

Step-by-step explanation:

`molar \: mass(mg) = 24g. {mol}^( - 1) mass = 24.3g \\ molar \: mass(h20) = 18g. {mol}^( - 1) mass = 12g \\ n = (mass)/(molar \: mass) \\ n(mg) = 1.01mol wich \: is \: substance \: a\\ n(h2o) = 0.67mol \: which \: is \: substance \: b \\ ( |n|a )/( |n|b ) : (a)/(b) \\ (1.01)/(0.67): (1)/(2) \\ 1.51 > 0.50 \\ therefore \: substnce \: b \: which \: is \: water \: steam \: is \: limiting \: reagent`