CHM 103 - Water & pH Questions and answers with accurate rationales(PASSED)

CHM 103 - W ater & pH Questions
an d answ er s w ith accu r ate
r ationales(PASSED)
Determine the pH of the solution with the hydronium ion (H3O+ = 1*10^-10 M)
and indicate whether this is acidic, basic, or neutral - answer pH = 10, basic


Determine the pH of the solution with the hydroxide ion ([OH-] = 1 x10-6 M) and
indicate whether this solution is acidic, basic, or neutral - answer pH = 8, basic


True or False: A neutral aqueous solution has the same hydronium ion
concentration as a sample of pure water - answer True


If acid rain causes pond water to change from pH 6 to pH 4, the hydronium ion
concentration becomes - answer 100 x higher (the pH changes by two units, which
is equivalent to saying 10^2, which is 100 times)


Which statement is true for a neutral aqueous solution?
- it has a pH = 7
- it has a hydroxide ion concentration of 1 x 10-7 M
- it has hydroxide and hydronium in equal concentrations
- all of these are true for a neutral aqueous solution
- it has a hydronium ion concentration of 1 x 10-7 M - answer all of these are true
for a neutral aqueous solution