u guys...help me with this question..
ppr3 june 04 7 b) ii
can someone answer tht
i need help with that too
to find which is in excess we have to compare moles and see which one has more, this will be excess.
Moles of Mg=3/24=0.125
Moles of Ethanoic acid= 12/60=0.2
So now u may think that ethanoic acid is excess.
But look at the mole ratios in the formula, it says (1)Mg + 2 ethanoic acid
so u hav to divide moles of acid by 2 so u get 0.1, so with the same ratios, mg has more mole(0.125),so its in excess....