Which is the limiting reactant if now we use 20g ...

poptartxkilla — Tue, 02 Jun 2009 12:05:48 GMT

which is the limiting reactant if now we use 20g of Sulfur mixed with 15?

I know oxygen is the limiting reactant but not sure how to do the work to prove.. i know i have to turn into mole ratios..Help me out? thanks

RE: Which is the limiting reactant if now we use 20g ...

honey — Fri, 05 Jun 2009 21:51:52 GMT

poptartxkilla

This was an 'answer the question from Yedda' . . . if I am reading your question correctly, could this be the answer you need? Just click on any of the 'boxes' and that will redirect you to a site specific for chemestry. Perhaps you can find an answer. Unfortunately, there is no format that allows me to enter the ratio involved.

The effects of oxygen limitation on solid-bed bioleaching of heavy metals (Me) were studied in a laboratory percolator system using contaminated sediment supplemented with 2% elemental sulfur (So). Oxygen limitation was realized by controlling the gas flow and oxygen concentration in the aeration gas. The oxygen supply varied between 150 and over 28 d of leaching. Moderate oxygen limitation led to temporarily suppression of acidification, rate of sulfate generation and Me solubilization. Lowering the oxygen supply to resulted in retarding acidification over a period of three weeks and in poor Me solubilization. Oxidation of So occurred even under strong oxygen limitation at a low rate. High surplus of oxygen was necessary for almost complete oxidation of the added So. The maximum Me solubilization was reached at an oxygen supply of . Thus, the oxygen input during solid-bed bioleaching can be reduced considerably by controlling the gas flow without loss of metal removal efficiency. Oxygen consumption rates, ranging from 0.4 × 10?8 to , are primarily attributed to high reactivity of the sulfur flower and high tolerance of indigenous autotrophic bacteria to low oxygen concentrations. The So related oxygen consumption was calculated assuming a molar yield coefficient YO2/S of 1.21. The oxygen conversion degree, defined as part of oxygen feed consumed by So oxidation, increased from 0.7% to 68% when the oxygen supply was reduced from 150 to .