How many moles of OH- do you have
molesOH- = .0275*.120
You need the same number of moles of HGly
molesHGly=.268/molemassHGly
solve for the molar mass of HGly.
Glycine is an amino acid that can be abbreviated HGly. If 27.50mL of 0.120 M NaOH neutralizes 0.248 g of HGly,what is the molar mass of the amino acid?
2 answers
from the abbreviated formula it is a monoprotic acid. Thus the equation for the neutralisation is
HGly + NaOH -> H2O + NaGly
so one mole of HGly reacts with one mole of NaOH.
number of moles of NaOH used is
0.02750 L x 0.120 mole L^-1
which is the same as the number of moles of HGly
so as number of moles = mass/molar mass
we can find the molar mass as mass (0.248 g) is given in the question.
HGly + NaOH -> H2O + NaGly
so one mole of HGly reacts with one mole of NaOH.
number of moles of NaOH used is
0.02750 L x 0.120 mole L^-1
which is the same as the number of moles of HGly
so as number of moles = mass/molar mass
we can find the molar mass as mass (0.248 g) is given in the question.