Help me in Acid base question please!

Question

anonymous · Answer

attachment

anonymous · Answer

How do I make an equation from the equation given/

anonymous · Answer

@nincompoop

anonymous · Answer

anyone?

anonymous · Answer

Well, the only equation that seems to fit is the one with the strarting products on the left-hand side of the equation.

aaronq · Answer

When you're starting these types of problems first write down the equation in words and substitute the formulas into the equation. (We also have to know that acid-base reactions always produce a salt and water).


$\sf sodium~ bicarbonate + lactic ~acid \rightleftharpoons sodium ~lactate+carbonic~ acid $
                                                               salt          (will break down further)

Substitute formulas 

$\sf NaHCO_3+\color{red}HC_3H_5O_3\rightleftharpoons NaC_3H_5O_3+ H_2CO_3$
                                               salt

(the $H^+$ lost by lactic acid is highlighted in red)

So where's the water (from the acid-base reaction)?

Carbonic acid breaks down into water and carbon dioxide. $CO_2$ gas is actually responsible for making the bread rise.

$\sf H_2CO_3 \rightleftharpoons  CO_2+H_2O$

If we put these together we get

$\sf NaHCO_3+HC_3H_5O_3\rightleftharpoons CO_2+H_2O +NaC_2H_5O_3 $

Removing the spectator ions and showing the charges makes it a net ionic equation.

$\large \sf HCO_3^-+HC_3H_5O_3\rightleftharpoons CO_2+H_2O +C_2H_5O_3^- $