Calculate the expected pH when 0.5 mL of 0.1 M HCL is added to
30.0 mL pure water. Do the same calculation when the same amount of
HCl is added to 30.0 mL of your original .05M buffer. Compare the
calculated pH to the actual measured pH.
My buffer has a pH of 5.09 and I used acetic acid which has a
pKa of 4.76
2.
If you have 50 mL of .05M potassium phosphate buffer pH 7.0 and you...
calculate the change in pH when 3.00 ml of 0.1 M HCL
is added to 100 ml of a buffer solution that is 0.1 M in NH3 and
0.1 M in NH4Cl.
Calculate the change in pH when 3.00 ml of 0.1 M NaOH is added to
the original buffer solution.
Add 10 mL of 0.1 M HCl to one liter of a 0.10 M sodium acetate
buffer, pH 6.76 (pKa = 4.76 for acetic acid). Does the pH of the
solution change? Determine the effect of the addition of 20.0 mL of
0.100 M HCl?
What is the pH after adding 10.0 mL of 0.10 M HCl to a 90.0 mL
buffer solution of 0.60 M CH3COOH and 0.40 M
CH3COONa at 25 °C? (Ka = 1.8 x
10−5)? What reaction will occur when HCl is added to the
above buffer?
1) How many moles of acetic acid are present after the
reaction?
2) How many moles of acetate ion are present after the
reaction?
3) What is the concentration (in M) of acetic acid...
0.1 M HCl is a stong-conductor and 0.1 M
HC2H3O2 is a weak-conductor.
Explain the difference in conductivity between 0.1 M HCl and 0.1 M
HC2H3O2. Relate the difference to
the terms strong acid and weak acid.