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12 Dec 2019

Calculate the expected pH of this solution

30.0 mL H2O
2.0 mL of 1.0 M NaOH

Expected pH of water= 7.00
Measured pH of water= 6.83

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Tod Thiel
Tod ThielLv2
13 Dec 2019

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Related questions

I have two questions here.
1.

Calculate the expected pH when 0.5 mL of 0.1 M HCL is added to 30.0mL pure water. Do the same calculation when the same amount of HClis added to 30.0 mL of your original .05M buffer. Compare thecalculated pH to the actual measured pH.

My buffer solution pH=4.36.

2.
If you have 50 mL of .05M potassium phosphate buffer pH 7.0 and youadded 2.0 mL of 0.1M HCl what would the final pH be? What would thepH be if 2.0 mL of 0.1M NaOH was added to the same amount of theoriginal buffer?
please help

E. pH of Buffer after the addition of the Strong Acid

Measure out 50.0 mL the buffer in part D and add 2.0 mL of 1.0 M HCl into a clean beaker.

1. Calculate the expected pH of this solution. pH _________

2. Measured pH of this solution. pH ____5.30_____

3. What is the percent error between the calculated and measured value? What are some of the possible sources of this error?

% error ____

F. pH of Buffer after the addition of the Strong Base

Measure out 50.0 mL the buffer in part D and 2.0 mL of 1.0 M NaOH into a clean beaker.

1. Calculate the expected pH of this solution. pH _________

2. Measured pH of this solution. pH _4.57________

3. What is the percent error between the calculated and measured value? What are some of the possible sources of this error?

% error ____

Buffer Solution from Strong Base and Weak Acid

Solution=
30.0 mL of 1.0 M CH3COOH
5.0 mL of 1.0 M NaOH

1. Calculate the total volume. 35 mL

2. What is the concentration of acetic acid in this solution after mixing? (include units)

3. What is the concentration of sodium hydroxide in this solution after mixing (include units)

4. Calculate the expected pH of this buffer solution.

5. Measured pH of this buffer solution. 3.89

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