# Tartaric acid is the white, powdery substance that coats tart candies such as Sour Patch Kids. COmbustion analysis of a 12.01g sample of tartaric aid, which contains carbon, hydrogen and oxygen, produces 14.08g CO2 and 4.32g H2O. Determine the empirical formula of the acid.

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Tartaric acid is the white, powdery substance that coats tart candies such as Sour Patch Kids. COmbustion analysis of a 12.01g sample of tartaric aid, which contains carbon, hydrogen and oxygen, produces 14.08g CO2 and 4.32g H2O. Determine the empirical formula of the acid.

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Step 1

Empirical formula:the simplest positive integer ratio of atoms that is present in a compound is called the empirical formula of that compound.

the empirical formula can be calculated as follows:

Step 2

first find moles of carbon dioxide and then find the mass of carbon as follows:

mass of carbon dioxide=14.01gram

molar mass of carbon dioxide=44.01gram/mol

substitute these values in the above equation (1),

mass of  carbon=0.3183mol×12.011g-mol-1

=3.824g

now find moles of water and then the mass of hydrogen as follows:

mass of water=4.32g

the molar mass of water=18.01g-mol-1

substitute these values in the above equation (2)

Step 3

mass of tartaric acid is given=12.01g

therefore the mass of oxygen can be calculated as

mass of oxygen=massof tartaric acid-(mass of carbon + mass of hydrogen)

mass of oxygen=12.01g-(3.824g + 0.4835g)

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