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mario62 [17]
3 years ago
14

In the combustion reaction CH4+2O2 yield CO2 + 2H2Owhich reactant has the greatest rate of disappearance?

Chemistry
1 answer:
Maksim231197 [3]3 years ago
6 0

Answer:

To consume the 2.8 moles of CH4 we need 5.6 moles of O2 since the molar ratio is 1:2. We have only 3 moles of O2 ; therefore, O2 is the limiting reactant.

Explanation:

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empirical formula is the simplest ratio of whole numbers of elements making up a compound

the percentage compositions for each element has been given. So we can calculate for 100 g of the compound.

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C - 74.1 g - 74.1 g/12 g/mol = 6.17 mol

H - 8.6 g - 8.6 g / 1 g/mol = 8.6 mol

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divide all by the least number of moles

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when the atoms are rounded off to the nearest whole numbers

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H - 7

N - 1

empirical formula is C₅H₇N

we have to find what the mass of 1 empirical unit is

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we have to find how many empirical units make up 1 molecule

number of empirical units = molecular mass / mass of 1 empirical unit

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there are 2 empirical units

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molecular formula - C₁₀H₁₄N₂

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