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pH in Digestive System

21. The ph of...

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21. The ph of 0.1M NaHs is, if Ka1 and Ka2 for H2s are 1.3 * 10-7 and 7.1 * 10-15 respectively

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Q. A solution contains

0.1 M

H_{2} S

0.3 M

H C l

. Calculate the concentration of

S^{2 -}

{H S}^{-}

ions is solution. Given

K_{a_{1}}

K_{a_{2}}

H_{2} S

10^{- 7}

1.3 \times 10^{- 13}

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}

respectively at

25^{o} C

Q. A solution contains 0.1 M

H_{2} S

and 0.3 M HCl. Calculate the conc. of

S^{2 -}

H S^{-}

ions in solution, Given

K_{a_{1}}

K_{a_{2}}

H_{2} S

10^{- 7}

1.3 \times 10^{- 13}

Q. Calculate the appoximate pH of

0.1 M

H_{2} S

K_{1}

K_{2}

H_{2} S

1.0 \times 10^{- 7}

1.3 \times 10^{- 13}

respectively at

25^{o} C

Q. A solution contain 0.10 M

H_{2} S

and 0.3 M HCl.Calculate the concentration of

S^{2 -}

and HS ions in the solution, For

H_{2} S

K_{a_{1}}

=

\times 10^{- 7}

K_{a_{2}} = 1.3 \times 10^{- 13}

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