Question

: Citric acid, H3C6H5O7, is a triprotic acid. Consider a buffer system comprising H2C6H5O7 - and HC6H5O7 2- ions. What is the net ionic equation for the reaction that occurs when NaOH is added to a buffer containing H2C6H5O7 - and HC6H5O7 2- ?

Answer 1

Answer:

The Net reaction is    

1.    $H_3C_6H_5O_7 + 0H^- ----> H_2C_6H_5O_7^- +H_2O \ \ \ \ \ \ \ Main \ Reaction$
2.    $H_2C_6H_5O_7^ - + OH^- ----> H_C_6H_5O_7^{ 2-} + H_2O \ \ \ \ Add \ NaOH$
3.    $HC_6H_5O_7 ^{2-} + OH^- ---> C_6H_5O_7^{3-} +H_2O \ \ \ \ \ Add \ NaOH$  

Explanation:

From the Question we are told that the buffers are

                $H_2C_6H_5O_7^ -$ and  $HC_6H_5O_7 ^{ 2-}$

When NaOH is added the Net ionic reaction would be

1.    $H_3C_6H_5O_7 + 0H^- ----> H_2C_6H_5O_7^- +H_2O \ \ \ \ \ \ \ Main \ Reaction$
2.    $H_2C_6H_5O_7^ - + OH^- ----> H_C_6H_5O_7^{ 2-} + H_2O \ \ \ \ Add \ NaOH$
3.    $HC_6H_5O_7 ^{2-} + OH^- ---> C_6H_5O_7^{3-} +H_2O \ \ \ \ \ Add \ NaOH$  

             

Answer 2

Answer:

Net ionic equation are as follows

$(1) H_3C_6H_5O_7 + 0H^- \rightarrow H_2C_6H_5O_7^- +H_2O \\\\ (2) H_2C_6H_5O_7^ - + OH^- \rightarrow H_C_6H_5O_7^{ 2-} + H_2O \\\\ (3) HC_6H_5O_7 ^{2-} + OH^- \rightarrow C_6H_5O_7^{3-} +H_2O$

Explanation:

Citric acid, H3C6H5O7, is a triprotic acid

he net ionic equation for the reaction that occurs when NaOH is added to a buffer containing H2C6H5O7 - and HC6H5O7 2-

Net ionic equation are as follows

$(1) H_3C_6H_5O_7 + 0H^- \rightarrow H_2C_6H_5O_7^- +H_2O \\\\ (2) H_2C_6H_5O_7^ - + OH^- \rightarrow H_C_6H_5O_7^{ 2-} + H_2O \\\\ (3) HC_6H_5O_7 ^{2-} + OH^- \rightarrow C_6H_5O_7^{3-} +H_2O$