from a condensation reaction between lots of glucoses
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describe the test for starch.
put test solution in spotting tile > add iodine > goes blue/black if starch is present
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what is the test for reducing sugars?
Benedict's test
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describe the test.
add Benedict's solution to the test solution > heat in 80c water bath > goes brick red if reducing sugar is present
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what are standard solutions?
solutions of know concs, you note down results and then carry out the test on solutions of unknown conc then obtain results to obtain conc.
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what does the acid hydrolysis test test for?
non-reducing sugars
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what do you do after you have carried out the test?
the Benedict's test
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describe the process.
do Benedict's test > add HCl to test solution > boil in water bath over bunsen burner for 5 mins > cool and add sodium hydrogen carbonate to neutralise > repeat B's test
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what should the results be?
the second Benedict's test should be positive if the carbohydrate is a reducing sugar
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