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8,3g fenolu------108,3g roztworu (8,3g fenolu + 100g wody)
xg fenolu---------100g roztworu
x=7,66g fenolu
x=7,66%
ms(masa fenolu)-8,3g
mw(masa wody)-100g
mr(masa roztworu)= ms + mw= 8,3g + 100g= 108,3g
Obliczam stężenie procentowe (C%) :
C%= ms × 100% : mr= 8,3g × 100% : 108,3g = 7,66 %
Nasycony roztwór fenolu w temp. 293K ma stężenie 7,66 %