1. What should be the concentration of the salt if the required concentration of the acid component is 1.00 M? a. 0.66 M b. 1.5 M C. 6.6 M d. 9.9 M How much of the acid will you use? a. 25 mL b. 40 mL C. 10 mL d. 5.0 mL 3. How much of the salt is needed? a. 40 g b. 24 g C. 22 g d. 16 g 2.

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You are asked to prepare a 200.0 mL buffer solution of pH 8.52 from the following hypohalous acids:
Hypobromous acid, HBrO
Hypochlorous acid, HCIO
Hypoiodous acid, HIO
(Ka = 2.0 × 10-⁹)
(Ka = 3.0 × 10-8)
(Ka = 2.0 x 10-11)
The available reagents are 5.0 M each of the acids and solids NaCIO (74.44 g/mol), NaBrO (118.9
g/mol) and NalO (165.9 g/mol).
Transcribed Image Text:You are asked to prepare a 200.0 mL buffer solution of pH 8.52 from the following hypohalous acids: Hypobromous acid, HBrO Hypochlorous acid, HCIO Hypoiodous acid, HIO (Ka = 2.0 × 10-⁹) (Ka = 3.0 × 10-8) (Ka = 2.0 x 10-11) The available reagents are 5.0 M each of the acids and solids NaCIO (74.44 g/mol), NaBrO (118.9 g/mol) and NalO (165.9 g/mol).
1.
What should be the concentration of the salt if the required concentration of the acid component is 1.00 M?
a.
0.66 M
b.
1.5 M
C.
6.6 M
d.
9.9 M
2. How much of the acid will you use?
a.
25 mL
b.
40 mL
C.
10 mL
d.
5.0 mL
How much of the salt is needed?
a.
40 g
b.
24 g
C.
22 g
d.
16 g
4.
How many grams of sodium acetate (82.03 g/mol) must be added to 1.00 L of 0.50 M solution of acetic acid to produce a
buffer solution at pH 4.00? (Ka = 1.75 × 10-5)
a.
7.2 g
b.
230 g
C.
24 g
d.
0.0011 g
5.
After preparing the buffer solution above, 20.0 mL of 0.85 M NaOH was added. What will be the new pH of the buffer
solution?
a. 5.42
b. 4.09
C. 4.01
d.
3.99
3.
Transcribed Image Text:1. What should be the concentration of the salt if the required concentration of the acid component is 1.00 M? a. 0.66 M b. 1.5 M C. 6.6 M d. 9.9 M 2. How much of the acid will you use? a. 25 mL b. 40 mL C. 10 mL d. 5.0 mL How much of the salt is needed? a. 40 g b. 24 g C. 22 g d. 16 g 4. How many grams of sodium acetate (82.03 g/mol) must be added to 1.00 L of 0.50 M solution of acetic acid to produce a buffer solution at pH 4.00? (Ka = 1.75 × 10-5) a. 7.2 g b. 230 g C. 24 g d. 0.0011 g 5. After preparing the buffer solution above, 20.0 mL of 0.85 M NaOH was added. What will be the new pH of the buffer solution? a. 5.42 b. 4.09 C. 4.01 d. 3.99 3.
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