This lab consisted of determining the vitamin C content of different juices. We got samples of pear, grapefruit, V8, and apple juices and compared these juices' vitamin C content to that of a standard solution. We used iodine as a indicator and dropped iodine into the juice samples until the juices turned blue. The grapefruit turned out to have the most vitamin C content, and the pear had the lowest vitamin C content.
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Making the standard solution |
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Lab set-up |
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Adding drops of iodine to juice sample |