How does antacid relate to chemistry?
Antacids work by counteracting (neutralising) the acid in your stomach. They do this because the chemicals in antacids are bases (alkalis) which are the opposite of acids. A reaction between an acid and base is called neutralisation. This neutralisation makes the stomach contents less corrosive.
How do you determine the effectiveness of antacids?
Antacids are bases that react stoichiometrically with acid. The number of moles of acid that can be neutralized by a single tablet of a commercial antacid will be determined by back titration. To do the experiment, an antacid tablet will be dissolved in a known excess amount of acid.
What is the chemical reaction between antacids and stomach acid?
Many antacids contain calcium carbonate (CaCO3), which reacts with the strong hydrochloric acid in stomach fluid. This produces neutral calcium chloride (CaCl2) and weak carbonic acid (H2CO3). In this experiment, a color change shows that the antacid is working.
How do you describe an antacid?
antacid, also spelled antiacid, any substance, such as sodium bicarbonate, magnesium hydroxide, calcium carbonate, or aluminum hydroxide, used to counteract or neutralize gastric acids and relieve the discomfort caused by gastric acidity.
What is the pH level of antacid?
Antacids are effective at calming stomach discomfort because they create a neutral pH when they react with acids. Stomach acid has a pH value of 1 and an antacid tablet has a pH of 10.
Which chemical equations show a reaction that occurs when someone takes an antacid?
Sodium hydrogen carbonate is an antacid often used to neutralize excess acid. NaHCO3 + HCl → NaCl + H2O + CO2 / HCO3- + H+ → H2O + CO2; States not required for mark.
Which antacid works best lab report?
Having completed this experiment, students then determined the average volume of acid neutralized per gram of antacid to determine which was the most effective. After all of their hard work, students found that Pepto-Bismol was the most effective at neutralizing acid.
Which antacid is the most effective lab?
The calculation performed shows that Tums is most effective in both categories and this is because it has the highest value for moles of HCl neutralized per tablet.
What is the pH of stomach acid?
1.5 to 3.5
The normal volume of the stomach fluid is 20 to 100 mL and the pH is acidic (1.5 to 3.5). These numbers are converted to actual acid production in units of milliequivalents per hour (mEq/hr) in some cases. Note: Normal value ranges may vary slightly depending on the lab doing the test.
What is the pH value of antacid?
Antacids are effective at calming stomach discomfort because they create a neutral pH when they react with acids. Stomach acid has a pH value of 1 and an antacid tablet has a pH of 10. When they are mixed together, the pH is closer to 7, which is neutral.
Is antacid acidic or basic?
Antacids are basic compounds which neutralize hydrochloric acid in the gastric secretions.
Do antacids raise or lower pH?
Antacids are drugs capable of buffering stomach acid. Antacids raise the pH of the stomach contents toward neutrality. An antacid that raises the pH from 1.5 to 3.5 produces a 100-fold reduction in the concentration of gastric acid.