Chemistry, 04.04.2020 11:51 qdogisbeast6132
What is the pH of a buffer that consists of 0.254 M CH3CH2COONa and 0.329 M CH3CH2COOH? Ka of propanoic acid, CH3CH2COOH is 1.3 x 10-5 Enter your answer with two decimal places.
Answers: 1
![pH=pK_a+\log(\frac{[salt]}{[acid]})](/tpl/images/0582/3078/e4eea.png)
![pH=-\log[K_a]+\log(\frac{[salt]}{[acid]})](/tpl/images/0582/3078/241de.png)
![pH=-\log[K_a]+\log(\frac{[CH_3CH_2COONa]}{[CH_3CH_2COOH]})](/tpl/images/0582/3078/3bb21.png)
= Dissociation constant of propanoic acid = 
![[CH_3CH_2COONa]=0.254 M](/tpl/images/0582/3078/1c6b0.png)
![[CH_3CH_2COOH]=0.329 M](/tpl/images/0582/3078/2d813.png)
![pH=-\log[1.3\times 10^{-5}]+\log(\frac{[0.254 M]}{[0.329]})](/tpl/images/0582/3078/2a2b4.png)
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What is the pH of a buffer that consists of 0.254 M CH3CH2COONa and 0.329 M CH3CH2COOH? Ka of propan...
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