When hydrochloric acid reacts with sodium sulfide, hydrogen sulfide gas and sodium chloride are produced. How many moles of H2S will be generated by 2.56 moles of HCl? 2HCl + Na2S → H2S + 2NaCl
well 1.28 mol of H2S will be produce but it didn't said anything about that where the experiment happens (in STP situation (which seems not to be true ) or not )
