The discussion centers on the unexpected formation of white precipitates when mixing vinegar with soda water, specifically a solution containing sodium carbonate and sodium silicate. Participants concluded that the white pieces are likely silicate acid, which is poorly soluble in water. The conversation emphasizes the importance of using real chemicals for neutralization to avoid side reactions. Additionally, the interaction between vinegar's acidic components and sodium silicate was identified as a key factor in the observed results.
PREREQUISITESChemistry enthusiasts, educators, and students exploring acid-base reactions, as well as anyone interested in the chemical interactions of common household substances like vinegar and soda water.
scilover89 said:Recently, I mixed vinegar and soda water together in a plate, but the result was confusing. Since soda water contain sodium silicate and sodium ash, the result should be soluble, as sodium salts always dissolve in the water. However, in the experiment, I get some white pieces which can't dissolve in the water. What is it?
I meant the solution of sodium carbonate and sodium silicate.pack_rat2 said:Hmmm...by "soda water," what do you mean? Normally, that refers to a solution of CO2 in H2O, which is carbonic acid (a very weak acid). You add a little flavoring to make a carbonated beverage.
Yeah, the solution did contain sodium silicate as you predict earlier. So what could be the side effect chemical equation that produced silicate acid?chem_tr said:Vinegar has some preservative compounds, I think the white pieces come from it. You wanted to do a neutralization, I suppose, I recommend that you do it with real chemicals to avoid side reactions (like those white pieces you saw in your experiment). You may be right about sodium salts' solubility, but consider that vinegar acid may produce silicate acid, which is poorly soluble in water.