The formula shown in the introduction can be used to calculate the amount of asc

Question

The formula shown in the introduction can be used to calculate the amount of ascorbic acid(mg) in test solutions. If 10.5ml of iodine solution is needed to titrate 10.0ml of 1.0mg/ml ascorbic acid standard solution and 7.0ml of iodine solution is needed to titrate 10.0ml of an ascorbic acid test solution. What concentration (mg/ml) of ascorbic acid in the test solution? The formula shown in the introduction can be used to calculate the amount of ascorbic acid(mg) in test solutions. If 10.5ml of iodine solution is needed to titrate 10.0ml of 1.0mg/ml ascorbic acid standard solution and 7.0ml of iodine solution is needed to titrate 10.0ml of an ascorbic acid test solution. What concentration (mg/ml) of ascorbic acid in the test solution?

Explanation / Answer

10.5 mL of iodine solution is required to titrate 10mL of 1mg/ml ascorbic acid

then, concentration of iodine solution = (10mL x 1mg/mL) / 10.5mL = 0.9523gm/mL

7 ml of iodine solution is required to titrate 10mL of ascorbic acid test solution, then the concentration of asorbic acid solution = (7ml X 0.9523mg/ml)/10mL =0.6666gm/mL

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