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Question: question 14 when our muscles do not have enough oxygen...

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Question 14

When our muscles do not have enough oxygen, glucose is converted to lactic acid to produce energy as shown by the reaction below: C6H12O6(aq)  2C3H6O3(aq) (+ some energy) Glucose Lactic acid a In a particular muscle sample, it was found to contain 1∙20 x 10-3 mol/L glucose and 7∙60 x 10-3 mol/L lactic acid.

Determine the original concentration of glucose in the 10∙00 mL sample? (Assume that only the above reaction occurred). [4 marks]

b A 2∙00 mL sample of blood was tested for concentration of Lactic acid. The sample was first diluted to 10∙00 mL and then 1∙00 mL was tested and found to contain 1∙80 x10-6 mol lactic acid. Determine the concentration of lactic acid in the blood sample. [3 marks]

c In the lab, a 1∙00 L solution containing 50∙0 g glucose was treated with an enzyme that converted all the glucose to lactic acid. Determine the concentration of lactic acid produced. 

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