Is apple cider vinegar more acidic than lemon? Both apple cider vinegar and lemon juice are acidic, but their acidity levels differ slightly. On average, lemon juice tends to have a lower pH than ...
"They do the exact opposite and make it more acidic," said Byrne. "The pH of both apple cider vinegar and lemon is usually two to three, so adding it to normal water will lower the pH, not raise it.