mols phenolphthalein = grams/molar mass = ?
molality = m = mols/kg solvent
Then delta T = Kb*m. You have m and Kb, solve for delta T.
Then boiling point = 100 + delta T.
Estimate the boiling point of 250 cm3 of water to which 12.6 g of phenol(C6H5OH) has been added. Treat the solution as ideal.( water of boiling point elevation is 0.51K/mol)
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