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Calculate the change in pH to 0.01 pH units caused by adding 10. mL of 2.63-M NaOH is added to 440. mL of each of the following solutions.

a) water

pH before mixing =

pH after mixing=

pH change =

b) 0.120 M NH41+

pH before mixing =

pH after mixing=

pH change =

c) 0.120 M NH3

pH before mixing =

pH after mixing=

pH change =

d) a buffer solution that is 0.120 M in each NH41+ and NH3

pH before mixing =

pH after mixing=

pH change =

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