Problem: 1.0-L of a buffer solution contains 0.800 moles of acid HA (K a = 2.00 x 10 -6 ) and 0.800 moles of its conjugate base, A− . What is the change in pH upon the addition of 0.0500 moles of a strong base to this solution (with no change in volume)? (a) +0.05 (b) +0.03 (c) +0.01 (d) -0.01 (e) -0.05  

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1.0-L of a buffer solution contains 0.800 moles of acid HA (K a = 2.00 x 10 -6 ) and 0.800 moles of its conjugate base, A . What is the change in pH upon the addition of 0.0500 moles of a strong base to this solution (with no change in volume)?

(a) +0.05

(b) +0.03

(c) +0.01

(d) -0.01

(e) -0.05

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