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Calculate the volume of the product CO2.Calculate the volume of carbon dioxide gas...

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fern001 | Student, Undergraduate | (Level 1) eNoter

Posted January 20, 2012 at 7:32 PM via web

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Calculate the volume of the product CO2.

Calculate the volume of carbon dioxide gas produced, at SLC, when 5.00 g of calcium carbonate is added to a solution containing 5.00 g of nitric acid.

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ndnordic | High School Teacher | (Level 2) Associate Educator

Posted January 20, 2012 at 9:38 PM (Answer #1)

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First: write a balanced chemical equation so you can see the mole ratios of reactants and products.

2 HNO3 + CaCO3 -->  2 Ca(NO3)2  +  HOH  +  CO2

Second:

Calculate the moles of each reactant to determine if one is a limiting reactant.

moles of CaCO3 =  5g/molar mass of CaCO3

moles of HNO3 = 5 g/molar mass of HNO3

Third:

From your results in step 2, you will see that HNO3 is the limiting reactant.

Four:

Based on the information from step 3, and the balanced chemical equation in step 1, you know that for every 2 moles of HNO3 you will produce 1 mole of CO2, so find number of moles of CO2 produced.

Five:

You know that at STP, 1 mole of CO2 has a volume of 22.4 L.  Since you know the moles of CO2 from step 4, calculate the volume of gas produced.

Six:

Using Charles's Law, calculate the volume of the gas at SLC, using the volume from step 5, and knowing that the temperature is increasing from 273.1 to 298.1 K.

Sources:

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