Question

Q6-Calculte the mass for magnesium hydroxide produced from the reaction between magnesium and water. Use the mass of the magnesium 34.6g.

Answer 1

um Magnesium seats alooly with cold water to form a solution of magnesium hydroxide and hydrogen. Mg + 2H20 Mg(OH)2 + H₂ From the equation it is clear that one mol of My gives 1 mol of Mg(OH)2 molecular weight of Mg = 24.3 g/mol molecular weight of Mg(OH)2 . . = 58.3 g/mol * 1 mol Mg = 24.3 g Mg ; imod Mg(OH)2 = 58.3gm Mg(OH)2 24-3g Mg reacts to give 58.3 gm mg (OH)2 . 34.6g Mg reacts to give 58 3 x 34.6 g Mg(OH)2 = 83.01g Mg(OH)2 24-3^" : 83.01 g Mg(OH)2 will be produced from 39.6 g Mg with water