September 16, 2019, 12:36:14 AM
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Topic: Calculating mass of an element in a reactant based on the moles of Product  (Read 387 times)

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Offline amiller80

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This is my first post so please bash me if I format something wrong.

This is Experimental Chem/Principles of Chem if that helps.

Use the moles of CO2 produced to determine the mass (g) of carbon present in NaHCO3.

Moles of CO2: 6.90x10-5
Mass of reactant (NaHCO3): 0.0864 g

Overall Equation: NaHCO3(s) + H2SO4(aq) ➞ H2O(l) + CO2(g) + NaHSO4(aq)

I would think that since the mol ratio of CO2 and NaHCO3 is 1:1, then 6.90x10-5 moles of carbon is present in NaHCO3 and then just use the molar mass of C to determine the mass in grams. Right?

Offline AWK

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In this way, you will get carbon content in CO2. Correct.

But your data shows that the sample contains less than 10% pure NaHCO3.

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