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Lecture

Buffer Solutions (Medium)


Department
Chemistry
Course Code
CHM135H1
Professor
all

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Q3. Buffer Solutions (Medium)
You are provided with a mixture of 1.0M CH3COOH and 1.0M
CH3COO- Na+. Given the Ka is 1.8 x 10-5.
A- What is its pH?
B- You now add 0.20M H+ to 1.0 L buffer. Calculate its pH?
C- Now add 0.20M OH- to 1.0 L original buffer. Calculate its
pH?
D- Suppose we were given an 1.0L HCl solution whose pH
was 4.74. What would be the pH if we added 0.20M H+ to
this solution?
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