CHEM HELP PLZ

Question

What is the resulting pH of a solution that forms when 10.00mL of a 0.150 mol/L hydrochloric acid solution combined with 10.00mL of a 0.150 mol/L sodium hydroxide solution?

Greater than 7

Less than 7

Equal to 7

The solution will not have a pH

The pH must be determined experimentally

Answer 1

.010 L HCl x 0.150 mol HCl/ L HCl = .0015 mol HCl

 

.010 L NaOH x 0.150 mol NaOH/ L NaOH = .0015 mol NaOH

 

For each .0015 mole of H+, there is .0015 mole of OH-.  Therefore, they completely neutralize each other, forming H2O.  No change in pH. So, pH will = the pH of water = 7