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Nucleophilic Addition at the Carbonyl

what volume o...

Question

what volume of 0.1M HCOONa should be added to 50ml of 0.05M HCOOH to produce a buffer of pH=4 if p^Ka=3.7

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0.1 M H C O O N a

50 mL

0.05 M

p H = 4.0

p K_{a}

= 3.7

0.1 M H C O O N a

50 mL

0.05 M

p H = 4.0

p K_{a}

= 3.7

0.10 M

50 m L

0.05 M

4.0

p K_{a}

3.80

m o l e s

H C O O N a

1 L

0.1 M

H C O O H

p H

3.4

K_{a}

H C O O H = 2 \times 10^{- 4}

50 m L

0.1 M

{N H}_{4} O H

75 m L

0.1 M

{N H}_{4} C l

p K_{a}

{N H}_{4}^{+}

9.26

p H

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