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Sagot :
First we need to balance the redox-equation:
[tex]2H_2S+3O_2\to2SO_2+2H_2O,[/tex]We calculate the number of grams of H2S and O2 using the atomic mass:
[tex]11molesH_2S\cdot\frac{34gH_2S}{1molH_2S}=374gH_2S,[/tex][tex]2molesO_2\cdot\frac{32gO_2}{1molO_2}=64gO_{2.}[/tex]68 g of H2S (2*atomic mass of H2S) produces 96 g of O2 (3*atomic mass of O2):
Then, we calculate the limit reagent and excess reagent, following the calculation:
[tex]374gH_2S\cdot\frac{96gO_2}{68gH_2S}=528gO_{2,}[/tex][tex]64gO_2\cdot\frac{68gH_{2_{}}S}{96gO_2}=45.33gH_2S.[/tex]
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