Question
In: Chemistry
A buffer solution is composed of 1.723 g ofKH2PO4and 5.351 g of Na2HPO4 . ( ka...
A buffer solution is composed of 1.723 g ofKH2PO4and 5.351 g of Na2HPO4 . ( ka for dihydrogen phosphate ion is 6.2x10^-8 .)
pH =
Mass = g
A-What is the pH of the buffer solution?
B-What mass of KH2Po4 must be added to decrease the buffer solution pH by 0.10 unit from the value calculated in part a?
Solutions
queen_honey_blossom answered 8 months agoRelated Solutions
A buffer solution is composed of 1.843 g of KH2PO4 and 4.225 g of Na2HPO4 ....
A buffer solution is composed of 1.843 g of KH2PO4 and 4.225 g
of Na2HPO4 . (Ka for dihydrogen phosphate ion is 6.2x10^-8.)
A. What is the pH of the buffer solution? pH =_______
B.What mass of KH2PO4 must be added to decrease the buffer
solution pH by 0.10 unit from the value calculated in part a? Mass
=____
A buffer solution is composed of 1.482 g of KH2PO4 and 5.881 g of Na2HPO4 ....
A buffer solution is composed of 1.482 g of
KH2PO4 and 5.881 g of
Na2HPO4 . ( Ka for dihydrogen
phosphate ion is 6.2 x 10-8.)
A. What is the pH of the buffer solution?
pH = _______
B. What mass of KH2PO4 must be added to
decrease the buffer solution pH by 0.10 unit from the value
calculated in part a?
Mass = ______ g
A buffer solution is composed of 1.905 g of KH2PO4 and 5.181 g of Na2HPO4. (...
A buffer solution is composed of 1.905 g of KH2PO4 and 5.181 g
of Na2HPO4. ( Ka for dihydrogen phosphate ion is 6.2x10^-8 .)
a. What is the pH of the buffer solution?
pH =
b. What mass of KH2PO4 must be added to decrease the buffer
solution pH by 0.10 unit from the value calculated in part a?
Mass =
(Volume not given)
1a) A buffer solution is composed of 1.036 g of KH2PO4 and 4.424 g of na2hpo4....
1a) A buffer solution is composed of 1.036 g of KH2PO4 and 4.424
g of na2hpo4. ( for dihydrogen phosphate ion is 6.2*10^-8.) What is
the pH of the buffer solution?
b) What mass of KH2PO must be added to decrease the
buffer solution pH by 0.10 unit from the value calculated in part
a?
2)Lactic acid (CH3CHOHCO2H) is found in
sour milk, in sauerkraut, and in muscles after activity.
(Ka for lactic acid = 1.4 × 10-4.) If 2.03 g...
The buffer system in human blood buffer is composed of HCO3- and H2CO3. (The Ka for...
The buffer system in human blood buffer is composed of
HCO3- and H2CO3. (The
Ka for carbonic acid is 7.9 x 10 -7).
a. Please identify the acidic and basic component of the
buffer.
b. Please write the chemical equation that will happen when
additional HCl is added into the buffer. (Hint: acids like to react
with bases.)
c. Please write the chemical equation that will happen when
additional NaOH is added into the buffer. (Hint: bases like to
react...
A buffer solution is composed of 1.426g KH2PO4 and 5.191g of Na2HPO (Ka for K2HPO4=6.2x10^-8) I...
A buffer solution is composed of 1.426g KH2PO4 and 5.191g of
Na2HPO (Ka for K2HPO4=6.2x10^-8)
I calculated the pH to be 7.75
Now, I am being asked to calcualte the mass of K2HPO4 needed to
decrease the pH by .10
I keep messing it up, help please :)
A buffer solution with a pH of 12.19 consists of Na3PO4 and Na2HPO4. The volume of...
A buffer solution with a pH of 12.19 consists of
Na3PO4 and Na2HPO4. The
volume of solution is 200.0 mL. The concentration of
Na3PO4 is 0.320 M.
What mass of Na3PO4 is required to change
the pH to 12.44?
Ka = 3.6 × 10-13
Hint: The answer is NOT 18.7 I already tried
that.
A buffer solution with a pH of 12.08 consists of Na3PO4 and Na2HPO4. The volume of...
A buffer solution with a pH of 12.08 consists of
Na3PO4 and Na2HPO4. The
volume of solution is 200.0 mL. The concentration of
Na3PO4 is 0.470 M.
What mass of Na3PO4 is required to change
the pH to 12.33?
Ka = 3.6 × 10-13
*************The answer is NOT 27.3g
Calculate the pH of a buffer solution that contains 0.44 M NaH2PO4 and 0.29M Na2HPO4 Calculate...
Calculate the pH of a buffer solution that contains 0.44 M
NaH2PO4 and 0.29M Na2HPO4
Calculate the change in pH if 0.100 g of solid NaOH is added to
250 mL of the solution in the problem above.
Calculate the pH of a buffer solution that contains 0.71 M NaH2PO4 and 0.12M Na2HPO4. I...
Calculate the pH of a buffer solution that contains 0.71 M
NaH2PO4 and 0.12M
Na2HPO4.
I got the answer to the first part which is 6.44, I need
help with the second part
Calculate the change in pH if 0.070 g of solid NaOH is added to
250 mL of the solution in the problem above
.
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