Question

ezto. S-CHEM 101A FA18 Dr. Van Dorn Homework 15 connect CHEMISTRY Homework 15 Question 11 (of 20) ▼ value 5.00 points Be sure to answer all parts. Calculate the value of H,oand [OH ] in each solution: (a) 6.9 M HCI; (b) 0.30 M NaOH. (b) [11,0 [011-1- ×10 M References eBook & Resources

Answer 1

a. 6.9M HCl

HCl(aq) + H2O(l) -------> H3O^+ (aq) + Cl^- (aq)

6.9M                                6.9M

[H3O^+]   = [HCl]

[H3O^+]   = 6.9M

[OH^-]   = Kw/[H3O^+]

             = 1*10^-14/6.9

              = 1.45*10^-15M

b. 0.30M NaOH

NaOH(aq) -----------> Na^+ (aq) + OH^- (aq)

0.30M                                             0.30M

[OH^-]   = [NaOH]

[OH^-]   = 0.30M

[H3O^+]    = Kw/[OH^-]

                  = 1*10^-14/0.30

                    = 3.34*10^-14M