From the equation 2 moles of K react to form 1 mole of H2 gas. At STP 1 mole of any gas occupies 22.4 litres.
0.400 mol of K will give 0.200 mole of H2 gas.
Volume = 0.200 mole x 22.4 l mole^-1
2K (s) + 2H2O (l) --> 2KOH (aq) + H2 (g)
When 0.400 mole of potassium reacts with excess water at STP, what is the volume of hydrogen gas produced?
the answer is 4.48 liters but I keep getting wrong numbers!
please help!
Thanks!
2 answers
Thanks!!