1wa xactly it does
a decolrs cu2+ ions
b decolorz soln
c prevent precipn of cu2+
d ~~~~~~~~~~~~~1+
i dono ans
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i red roschells salt is used in fehlings soln
any1 know y
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sems intrestin>>>>>>> replyyyy?>>>>
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6 Answers
1wat do u mean y
fehlin's solution is an equimolar mix of fehlin A and fehlin B solution werin
fehlinA is : cupric sulphate
B:sodium potassium tartarate (roschell salt)
itz used 2 distnquish betwn aldehydes and ketones ketones dnt rxt wid it b aldehyde does ...and gives a red ppt of cuporous oxide
11wen aldehyde is added it converts Cu(2+) blue colour into Cu(2+) red ppt
i dnt knw more chollie
1waaaaaaaa
Cu(2+) blue colour into Cu(2+)
u mean 1 to 2+ or versa vice>>>>
1the tartarate ion forms a complex preventing precipitation of some ion .I think it shoulod be Cu+
1I verified it in wiki , the tartarate ion prevent sprecipitation of Cu2+
for more check out
http://en.wikipedia.org/wiki/Fehling%27s_solution