Chemical Analysis

CH2O

Jöns Jacob Berzelius C6H12O6

Chemistry Essentials - 002

bozemanscience.com Chemical Analysis

Compounds

made of

Atoms Mass Percent

Specific mass Composition Empirical Formula Purity

bozemanscience.com Determine empirical formula:

Vitamin C > Analysis > > 61.38 g CARBON > 6.87 g HYDROGEN > 81.75 g OXYGEN > Done >

bozemanscience.com Explanation 2.5 grams 2.5 g/brick 1 brick

10 grams 2.5 g/brick 4 bricks

80 grams 2.5 g/brick 32 bricks

bozemanscience.com How many bricks? 1 brick 320 grams X = 128 bricks 2.50 grams

bozemanscience.com Element 197 grams 197 grams/mol 1 mol

788 grams 197 grams/mol 4 mol

6304 grams 197 grams/mol 32 mol

bozemanscience.com Convert to mole:

1 mol 56.7 grams X = .288 mole 197 grams

bozemanscience.com Determine empirical formula:

Vitamin C > Analysis > > 61.38 g CARBON > 6.87 g HYDROGEN > 81.75 g OXYGEN > Done >

bozemanscience.com Determine empirical formula: ! 61.38 g C 1 mol X = 5.11 mol C ! 12.01 g C 6.87 g H 1 mol X = 6.80 mol H ! 1.01 g H 81.75 g O 1 mol X = 5.11 mol O 16.00 g O

bozemanscience.com Determine empirical formula:

5.11 mol C / 5.11 = 1 CH1.33O

6.80 mol H / 5.11 = 1.33 C3H4O3 Empirical Formula 5.11 mol O / 5.11 = 1

Vitamin C bozemanscience.com Purity

> Analysis > Vitamin C > 61.38 g CARBON > 6.87 g HYDROGEN > 81.75 g OXYGEN > .006 g MERCURY > .013 g PALLADIUM > DONE >

bozemanscience.com Chemical Analysis

made of

Atoms Mass Percent

Composition Purity

bozemanscience.com Chemical Analysis

Compounds

made of

Atoms Mass Percent

Specific mass Composition Empirical Formula Purity

bozemanscience.com Did you learn?

Use mass data to identify or infer composition of pure substances and/or mixtures.

Use mass data in order to justify a claim regarding the identity and/or estimated purity of a substance.

bozemanscience.com Acknowledgements

“File:2oz Gold Engelhard.JPG,” March 26, 2013. http://en.wikipedia.org/w/index.php?title=File:2oz_gold_Engelhard.JPG&oldid=502536502. File:Ascorbic Acid (2).JPG, n.d. http://commons.wikimedia.org/wiki/File:Ascorbic_acid_(2).JPG. “File:Ascorbic-Acid-from-Xtal-1997-3D-Balls.png,” July 29, 2013. http://en.wikipedia.org/wiki/File:Ascorbic-acid-from-xtal-1997-3D-balls.png. “File:D-Glucose-Chain-3D-Balls.png,” July 29, 2013. http://en.wikipedia.org/wiki/File:D-glucose-chain-3D-balls.png. File:FAB MS.jpg, n.d. http://commons.wikimedia.org/wiki/File:FAB_MS.jpg. File:Gold Bar.png, n.d. http://commons.wikimedia.org/wiki/File:Gold_bar.png. “File:Jöns Jacob Berzelius.jpg,” July 29, 2013. http://en.wikipedia.org/wiki/File:J%C3%B6ns_Jacob_Berzelius.jpg.

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