Rennies are antacid, basic compounds.
An antacid is literary an alkali so they both have different limits on the ph scale..... acid = ph 0 - 6 and antacid = ph 8 - 14
Antacids are bases. Bases have a pH higher than 7...So, no.
by measuring the amount of neutralization of pH scale
The pH increase with the help of an antacid.
Antacid products having neutral having range near about pH 7-8.6
Antacid tablets dissolve into the stomach fluid and lower the PH but keeping it an acid. They are turned into more of a liquid than the solid they were prior. Under a microscope the antacid tablet is still in a solid for but it is reduced or diluted by the stomach fluid. A little mare about antacid tablets. Antacid tablets do just what the name suggests. Antacid neutralizes a low PH fluid in your stomach. Neutral PH is 7 on the PH scale. PH of 1 would be hydrochloric acid and others in that PH range. PH of 12 would be something like sudsy water soapy water. If the PH of the stomach fluid gets acidic the PH will drop to a lower number that is considered acidic. You can reduce the acid in your stomach by introducing another acid like vinegar or calcium or salt.
green indicates the pH value of 5-6 which is slightly acidic. for the whole pH color scale go to the reference cited.
After studying the color of litmus at different pH.
Antacid tablets have a pH greater than 7. They neutralize the acid in the stomach. Antacid tablets are usually hydroxides of aluminum or magnesium or the carbonates of sodium or calcium. Too much intake of antacids can lead to health problems. Aluminium may tie up phosphate in the body and causes constipation as does calcium whereas the magnesium salts can lead to diarrhea. Antacids can lead to kidney problems and / or hypertension.
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Usually about 7, because antacid tablets neutralize your stomach and the pH of 7 is neutral. Hope this helps:)