Can someone help me please and clearly show step by step how to get the answer. I can't figure it out.
*For each of the following reactions, 16.0 g of each reactant is present initially.
CS2(g)+3O2(g)→CO2(g)+2SO2(g)
-Calculate the grams of product in parentheses that
would be produced.
(CO2)
Solution: (Grams of CO2 = 7.33 g)
The theoretical mass of CO2 is calculated by the number of moles of limiting reagent. A limiting reagent is the reagent whose number of moles is minimum.
For the given reaction,
CS2 + 3O2 = CO2 + 2SO2
Mass of CS2 = 16 g
Molar mass of CS2 = 76.139 g / mol
Thus,
Number of moles of CS2 = mass / molar mass
= 16 g / 76.139 g mol-1 = 0.210 mol
Mass of O2 = 16 g
Molar mass of O2 = 32 g /mol
Number of moles = 16 g / 32 g mol-1 = 0.50 mol
From the above reaction, it can be seen that 1 mol of CS2 requires 3 mol of O2
Hence, 0.210 mol of CS2 requires = 0.210 x 3 = 0.630 mol O2
But amount of O2 = 0.50 mol
Hence, O2 will be the limiting agent.
Since, 3 mol of O2 reacts to form 1 mol of CO2
Thus,
0.50 mol of O2 will forms = 0.50 mol x /3 = 0.167 mol CO2
Hence, number of moles of CO2 = 0.167 mol
Molar mass of CO2 = 44 g /mol
Theoretical mass of CO2 = number of moles x molar mass of
= 0.167 mol x 44 g/mol = 7.33 g
Can someone help me please and clearly show step by step how to get the answer....
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