was it ascorbic acid or sodiumascorbate , a buffered variant?
Buffered, as far as I know, is a term used for a dry mixture of, for example, ascorbic acid and sodium bicarbonate (or other minerals). While sodiumascorbate usually means ascorbic acid chemically fully reacted with sodium bicarbonate, and therefore called sodiumascorbate, a chemically PH-neutral compound.
True, the buffered version would also chemically react to PH neutrality, as soon as dissolved in a liquid.
Personally with a very high intake of ascorbic acid at 25 g/d for 16 years (and many confounders), most of those years my blood PH has been 7.48 and thereby very alkaline. Only with recent years it returned to the upper half of normal range of 7.35 - 7.45.
Stomach acid itself is produced at about 8.75 g/d in an average human, but can have 10 to 100 times the acidity of ascorbic acid (perplexity.ai).