Answer to Question #137646 in General Chemistry for Smith Aline

Question

If 55.60mL of 0.2221M HCl was needed to titrate 30.00 of NaOH to its equivalence point. What is the molar concentration of NaOH

Answer 1

Balanced reaction between HCl and NaOH is

HCl + NaOH --------> NaCl + H₂O

n_A = mole of HCl =1

n_B = mole of NaOH =1

(M_AV_A/n_A) = (M_BV_B/n_A)

A represent HCl

B represent NaOH

{(0.2221M)×(55.60mL)/1} = (M_B)(30)/1

M_B = {(0.2221M)(55.60)/30mL}

M_B = 0.411M NaOH

M_B = molar Concentration of NaoH

M_B = 0.411 M NaOH