Question

Se trateaza 50 ml solutie NaOH cu 75 ml HCl cu concentratia molara=1 M.
*calculati concentratia molara a solutiei de NaOH.

Answer 1

moli HCl=75/1000*1=3/40 moli
NaOH+HCl-> NaCl +H2O
=> nr moli NaOH = nr moli HCL =3/40
50ml........3/40 moli
1000ml......3/40 * 1000 / 50 =1.5
=> concentratia molara a solutie de NaOH este 1.5M