Question

A buffer is prepared by mixing 109 mL of a 0.120 M solution of the weak...

A buffer is prepared by mixing 109 mL of a 0.120 M solution of the weak acid HA with 136 mL of a 0.150 M solution of NaA. What will be the pH of the resulting solution? Ka for HA is 2.30x10-6. ** All volumes should have 3 significant figures.

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A buffer is prepared by mixing 122 mL of a 0.120 M solution of the weak...
A buffer is prepared by mixing 122 mL of a 0.120 M solution of the weak acid HA with 145 mL of a 0.150 M solution of NaA. What will be the pH of the resulting solution?  Ka for HA is 2.30x10-6. all volumes should have 3 decimal places
A buffer is prepared by mixing 135 mL of a 0.120 M solut ion of the...
A buffer is prepared by mixing 135 mL of a 0.120 M solut ion of the weak acid HA with 109 mL of a 0.150 M solution of NaA. What will be the pH of the resulting solution?  Kafor HA is 2.30x10-6. ** All volumes should have 3 significant figures.
500 mL OF 0.120 M NaOH IS ADDED TO 605 mL OF .200 M WEAK ACID...
500 mL OF 0.120 M NaOH IS ADDED TO 605 mL OF .200 M WEAK ACID (Ka= 4.39X10-5). WHAT IS THE PH OF THE RESULTING BUFFER. HA(aq) + OH-(aq) -------> H2O (L) + A-
500.0 mL of 0.120 M NaOH is added to 605 mL of 0.250 M weak acid...
500.0 mL of 0.120 M NaOH is added to 605 mL of 0.250 M weak acid (Ka = 4.44 × 10-5). What is the pH of the resulting buffer?
a) What is the pH of a buffer prepared by adding 0.708 mol of the weak...
a) What is the pH of a buffer prepared by adding 0.708 mol of the weak acid HA to 0.608 mol of NaA in 2.00 L of solution? The dissociation constant Ka of HA is 5.66×10−7. Answer: pH=6.181 b)What is the pH after 0.150 mol of HCl is added to the buffer from Part A? Assume no volume change on the addition of the acid. please help me with part b, as I already solved for part a.
What is the pH of a buffer prepared by adding 0.809 mol of the weak acid...
What is the pH of a buffer prepared by adding 0.809 mol of the weak acid HA to 0.305 mol of NaA in 2.00 L of solution? The dissociation constant Ka of HA is 5.66×10−7.? What is the pH after 0.150 mol of HCl is added to the buffer from Part A? Assume no volume change on the addition of the acid? What is the pH after 0.195 mol of NaOH is added to the buffer from Part A? Assume...
A buffer solution is prepared by mixing 15.0 mL of 2.00 M Acetic Acid and 10.0...
A buffer solution is prepared by mixing 15.0 mL of 2.00 M Acetic Acid and 10.0 mL of 1.50 M NaC2H3O2. Determine the pH of the solution after the addition of 0.015 moles HCl (assume there is no change in volume when the HCl is added). Ka HC2H3O2 = 1.80E-5
QUESTION 1 Consider a solution prepared by mixing 10.0 mL of 0.200 M formic acid (HCHO2,...
QUESTION 1 Consider a solution prepared by mixing 10.0 mL of 0.200 M formic acid (HCHO2, pKa = 3.75) and 5.0 mL of 0.100 M NaOH. What is the value of Ka for formic acid? Ka = ___ M QUESTION 2 Before any reaction occurs, what is present in the solution? a) Strong acid + strong base b) Strong acid + weak base c) Weak acid + strong base d) Weak acid + weak base QUESTION 3 Before considering any...
A buffer solution is prepared by mixing 90.9 mL of 0.0847 M sodium hydrogen citrate with...
A buffer solution is prepared by mixing 90.9 mL of 0.0847 M sodium hydrogen citrate with 41.0 mL of 0.810 M sodium citrate. A table of pKa=6.4 1. Calculate the pH (to two decimal places) of this solution. Assume the 5% approximation is valid and that the volumes are additive. 2.Calculate the pH (to two decimal places) of the buffer solution after the addition of 67.1 mL of a 0.0121 M solution of calcium hydroxide to the existing buffer solution....
A buffer solution is prepared by mixing 78.9 mL of 0.0419 M acetic acid with 35.9...
A buffer solution is prepared by mixing 78.9 mL of 0.0419 M acetic acid with 35.9 mL of 0.0317 M sodium acetate. A table of pKa values can be found here. 1. Calculate the pH (to two decimal places) of this solution. Assume the 5% approximation is valid and that the volumes are additive. 2. Calculate the pH (to two decimal places) of the buffer solution after the addition of 1.88 g of sodium acetate (NaCH3COO) to the buffer solution...