Thanks Rod and Brightsky, should I just remember when I ratio: put the coefficient of the mol of what I am looking for on top of the fraction and what I'm ratio-ing it against at the bottom
Thanks heaps!!
Could anybody help me out with this question?
Ammonia is produced from its elements on a large scale using the Haber process (what on earth is this..?!). For reasons of environmental safety the concentration of ammonia in the air downwind of an ammonia production plant was mreasured by the following procedure:
a 20000 litre at stp sample of the air was slowly bubbled through an excess of dilute hydrochloric acid. the resulting solution was made alkaline and heated, the ammonia liberated being dissolved in exactly 50ml of 0.10 M HCl acid, which is a large excess. 40.00 mL of 0.10 M sodium hydroxide of 0.10 M Solution were required to neutralise the excess of acid.
Calculate the concentration of ammonia in the air in units of moles of ammonia per litre of air.
Is this some type of back titration?! Could someone give me some hints im so lost.. What do I do with the whole STP thing? What should I be thinking as soon as I read STP or SLC in a question? Thanks