HELP ME PLEASE ASAP!! One cup of fresh orange juice contains 132 mg of ascorbic acid (vitamin C, C6H8O6).?
2017-02-15 1:54 pm
Given that one cup = 251.0 mL calculate the molarity of vitamin C in organic juice.
回答 (2)
2017-02-15 2:40 pm
✔ 最佳答案
Molar mass of C₆H₈O₆ = (12.0×6 + 1.0×8 + 16.0×6) g/mol = 176.0 g/molNo. of moles of C₆H₈O₆ = (132/1000 g) / (176.0 g/mol) = 0.00075 mol
Volume of the solution = 251.0 mL = 0.2510 L
Molarity of Vitamin C in organic juice = (0.00075 mol) / (0.2510 L) = 0.00299 M
2017-02-15 1:57 pm
Divide 0.132 g by the molecular weight of ascorbic acid. This give you moles.
Now divide by 0.2510 L and your answer will be in moles/liter (or molarity)
Now divide by 0.2510 L and your answer will be in moles/liter (or molarity)
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