any 1 who could explain following phenomenon in easy words please :-
liberation of CO2 from saliva lchanges pH from 8 to 6 .(basic to acidic)
ans NaHCO3 stablizes it i.e from pH 6 to 7 ..

can u mak me understand the reactions taking place here plz

Question

any 1 who could explain following phenomenon in easy words please :-
liberation of CO2 from saliva lchanges pH from 8 to 6 .(basic to acidic)
ans NaHCO3 stablizes it i.e from pH 6 to 7 ..

can u mak me understand the reactions taking place here plz

anonymous · Answer

@cj49

anonymous · Answer

@Abhisar  the busiest person :p

anonymous · Answer

@Jesstho.-.

abhisar · Answer

I am not sure about this, but i think that Liberated CO2 forms an acid by dissolving into water and thus lowers the pH while NaHCO3 is basic and hence increases the pH from 6 to 7

anonymous · Answer

.but its not sufficient :(
wel thanks :)

anonymous · Answer

@abb0t  @hartnn  @Kamille @zepdrix @shamil98

abhisar · Answer

That's all i can say :(

anonymous · Answer

its f9 .. :)

anonymous · Answer

@superhelp101 @PRAETORIAN.10  missing u guys :( :P

aaronq · Answer

Abhisar summed it up, but here are the reactions.

Carbon dioxide is dissolved by making carbonic acid

       $\sf CO_2 +H_2O \rightleftharpoons H_2CO_3$      

Carbonic acid loses a proton to decreasing the pH, although the $K_A$ is very small. 

     $\sf H_2CO_3+H_2O\rightleftharpoons HCO_3^-+H_3O^+$
                               bicarbonate

Sodium bicarbonate reacts with hydronium and lowers it's concentration, increasing the pH.

$\sf NaHCO_3 +H_3O^+\rightleftharpoons H_2CO_3 +H_2O+Na^+$

superhelp101 · Answer

@saroash omg soooo sorry i wasn't on to help you but i think abhisar and aaronq helped you good!!! :)

anonymous · Answer

i was just kidding dnt b sory @superhelp101  :)

anonymous · Answer

@aaronq  @Abhisar  thanks alot guys :)

aaronq · Answer

np!