That's 20.5g NaOH in 100 g soln. The 100 g soln is composed of 20.5g NaOH + 100-20.5 ==> 79.5 g H2O
Convert 20.5g NaOH to moles.
Convert 79.5 g H2O to moles.
XNaOH = moles NaOH/total mols.
XH2O = moles H2O/total mols.
What is the mole fraction of NaOH in an aqueous solution that contains 20.5% NaOH by mass?
1 answer