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SSSSS [86.1K]
3 years ago
11

carbonate MgCO3, reacts with nitric acid, HNO3, to form magnesium nitrate and carbonic acid. Carbonic acid reacts to form water

and carbon dioxide. Which type of reaction does carbonic acid undergo ?
Chemistry
1 answer:
Alenkasestr [34]3 years ago
4 0
Most likely the carbonic acid im guessing H2CO3 undergoes thermal decomposition 

H2CO3 ===> H2O + CO2

hope that helps
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Calculate the ph of a 0.60 m h2so3, solution that has the stepwise dissociation constants ka1 = 1.5 × 10-2 and 1.82 1.06 1.02 2.
Vsevolod [243]
Missing in your question Ka2 =6.3x10^-8
From this reaction:
 H2SO3 + H2O ↔ H3O+  + HSO3-
by using the ICE table :
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intial         0.6                     0                  0
change     -X                      +X                +X
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So by substitution:
1.5X10^-2 = (X*X) / (0.6-X) by solving this equation for X
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by using the ICE table 2:
                 HSO3-     ↔   H3O     +     SO3-
initial        0.088              0.088              0
change    -X                      +X                   +X
Equ         (0.088-X)          (0.088+X)          X

Ka2= [H3O+] [SO3-] / [HSO3-]
we can assume [HSO3-] =  0.088 as the value of Ka2 is very small
 6.3x10^-8 = (0.088+X)*X / 0.088
X^2 +0.088 X - 5.5x10^-9= 0 by solving this equation for X
∴X= 6.3x10^-8
∴[H3O+] = 0.088 + 6.3x10^-8
               = 0.088 m ( because X is so small)
∴PH= -㏒[H3O+]
       = -㏒ 0.088 = 1.06 
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