Question

Consider the reaction that occurs when solid aluminum and aqueous sulfuric acid are combined:3 H2SO4(aq) + 2 Al(s) → Al2(SO4)3(aq) + 3 H2(g)How many moles of sulfuric are consumed if 0.522 moles of aluminum reacts according to the reaction shown above?

Answer 1

According to the given reaction, 3 moles of sulfuric acid react with 2 moles of aluminium, use this ratio to find how many moles are consumed when 0.522 moles of aluminium react:

$0.522molAl\cdot\frac{3molH_2SO_4}{2molAl}=0.783molH_2SO_4$

The answer is 0.783 moles of sulfuric acid.