00:01
Let's solve the question.
00:02
So magnesium in the solid state reacts with two moles of hydrochloric acid in the aqueous state.
00:10
It gives one mole of magnesium chloride in the aqueous state plus hydrogen in the gaseous state.
00:20
So this is the balanced chemical equation.
00:30
Now, here from this reaction we can say that one mole of magnesium reacts with two moles of hydrochloric acid.
00:46
Now here number of moles of magnesium that will be equal to mass given which is 5 .0 grams divided by the molar mass which is 24 .31 grams per mole.
01:07
So therefore we get the value of number of moles which is 0 .205 moles.
01:17
According to the balanced chemical equation, one mole of magnesium reacts with two moles of hydrochloric acid.
01:32
So the number of moles of hcl required will be, we can write number of moles of hydrochloric acid is 2 multiplied by the number of moles of magnesium.
01:54
That means 2 multiplied by 0 .205 moles...