Just because you read it here, doesn’t make it correct. Your stomach contains hydrochloric acid, so baking soda dissolved in water would be just as soothing, probably more so than adding more acid in the form of vinegar. Some people seem to have a mystical faith in Apple Cider Vinegar™ as the end all and be all of good health. ACV is not required for the reaction to occur and will only increase the total amount of acid to be reduced. So it kind of defeats the goal of reducing acidic stomach.
The chemical reaction between backing soda and vinegar actually occurs in two steps. First, there is a double displacement reaction in which acetic acid in the vinegar reacts with sodium bicarbonate to form sodium acetate and carbonic acid:
- NaHCO3 + HC2H3O2 → NaC2H3O2 + H2CO3
Carbonic acid is unstable and undergoes a decomposition reaction to produce water and carbon dioxide gas:
- H2CO3 → H2O + CO2
The overall equation is this:
- NaHCO3 + HC2H3O2 → NaC2H3O2 + H2O + CO2
The sodium acetate salt (NaC2H3O2) disassociates (forms a dilute sludge) rather than dissolves in the water (H2O) and the carbon dioxide (CO2) gets burped out of the system.
I suspect the sodium acetate might coagulate in your urine because a similar reaction occurs when sodium acetate reacts with acidic urine. There are multiple possibilities of reactions between sodium acetate and urine due to urine’s variable composition and the variable concentrations of those components in urine. It could very well be that your ‘urine sludge’ shows up only when a certain combo at certain concentrations occurs.