What is the pH of 0-1 M NaHCO3- Given K1-4-5-10-7- K2-4-5-10-11 for carbonic acids-

Given K_1=4.5×10^ 7, K_2=4.5×10^ 11 for carbonic acids.As we know, pH=pK_1 + pK_22 pH=11+7 2log 4.52=9 log 4.5=8.34 Hence, the pH of 0 ...

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Osmotic Pressure

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Question

What is the $p H$ of $0.1 M$ $N a H {C O}_{3}$ ?

(Given $K_{1} = 4.5 \times 10^{- 7}, K_{2} = 4.5 \times 10^{- 11}$ for carbonic acids.)

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p H

0.010 M

N a H {C O}_{3}

K_{1} = 4.5 \times 10^{- 7}

K_{2} = 4.7 \times 10^{- 11}

N a H C O_{3}

K_{1} = 4.5 \times 10^{- 7}, K_{2} = 4.5 \times 10^{- 11}

H_{2} C O_{3}

K_{1} = 10^{- 7}

K_{2} = 10^{- 11}

9

p H

0.01 M N a H C O_{3}

K_{a_{1}} a n d K_{a_{2}}

H_{2} C O_{3}

4.5 \times 10^{- 7} a n d 4.7 \times 10^{- 11}

25^{o} C

H^{+}, H C O_{3}^{-}

{C O}_{3}^{2 -}

0.01 M

4.18

K_{1} = 4.45 \times 10^{- 7}, K_{2} = 4.69 \times 10^{- 11}

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