Note that only a few commercial preparations are cited as examples. Following the process of the pre-lab: Aluminum hydroxide may alter the absorption of certain drugs [including some used to treat cardiac disease or high blood pressure] so they should not be taken simultaneously.
Some widely advertised brands, those with additional components and those containing greater concentrations of the effective ingredients, tend to cost more.
Phosphate bound by calcium in the gut or bone may deplete the serum phosphorus in some kidney failure patients. It is not an antacid. Aluminum hydroxide has other uses. Commercial Antacids Most commercial antacids contain two or more components.
Most commercially available antacids are combinations of aluminum and magnesium hydroxide. This is the opposite of excess acid acidosis. The dose should not exceed 3 g per day. Chronic, excessive use of aluminum hydroxide may deplete the body of phosphate, causing metabolic bone disease e.
Chalk calcium carbonate has been chewed for centuries to provide some relief and is still popular in some parts of the world. Those who require sodium restriction for high blood pressure or heart disease should avoid bicarbonate.
Tablets must be chewed, and may not interact well with gastric acid. About one-third of the administered calcium is absorbed, and high blood calcium or calcium-containing kidney stones are slight risks. A systemic alkalosis from prolonged and aggressive use infrequently produces metabolic consequences.
Aluminum hydroxide inactivates the gastric digestive enzyme pepsin. Antacids are the oldest effective medications for heartburn. Some spilling Sometimes a bit of the liquid was spilled in moments of transporting its container from place to place This can be avoided by doing the experiment in a more calm matter instead of worrying about time constraints.
Magnesium hydroxide is not absorbed by the intestine. Space precludes detailed listing of all products. A very small amount of aluminum is absorbed, and brain damage might occur with its long-term use in the treatment of kidney failure. It is also useful for patients who tend to form phosphate-containing kidney stones.
While generally a safe household remedy, its high sodium content is a disadvantage. However, the principal reason for its inclusion in commercial antacid preparations is to counteract the diarrhea effect of magnesium.
Sometimes that gastric acid can cause discomfort. To counter the diarrhea effect, most manufacturers add aluminum hydroxide, which is constipating. For most, the convenience of tablets far outweighs these slight disadvantages.
There are no satisfactory clinical trials, but these preparations have little neutralizing power and are probably of little benefit in those reflux patients who have complicating esophagitis.
Upset stomachs or heartburn are often the result of either too much acid production in the stomach or stomach acid splashing up into the esophagus. By relaxing the lower esophageal sphincter to release gas, peppermint encourages the release of a belch after a meal, hence the popularity of after-dinner mints.
Nonetheless, it is not always the best choice for regular use. It can completely neutralize stomach acid. Conclusion The determined unknown metal in the carbonate is potassium by the process shown above. The balance kept increasing 0. This can be avoided by checking to make sure the paper filter properly fits into the funnel without any air holes or rips.
Evaluation - Sources of Error Some CaCO3 got through the filter Amounts of material got through the paper filter - therefore I had less calcium carbonate than what was in the liquid I poured.
This is not a problem for a person with healthy kidneys, but magnesium should be avoided if renal failure is present. However, its interaction with stomach acid produces magnesium chloride that can be absorbed.
It binds phosphate in the gut lumen to produce insoluble aluminum phosphate, a feature that is useful in kidney failure when the serum phosphate is abnormally high. The combination substantially raises the price, and the addition of the less-effective aluminum hydroxide reduces the antacid benefit.Gravimetric Analysis of a Metal Carbonate Inquiry Guidance and AP* Chemistry Curriculum Alignment Introduction A large variety of analytical techniques and procedures, ranging from instrumental methods such as spectroscopy and.
We will write a custom essay sample on Ap Chemistry – Gravimetric Lab specifically for you for only $ $/page. This site is an ePortfolio for the laboratories of the AP Chemistry class from Moreau Catholic High School.
- By Ada Sedano A. Sedano - AP Chemistry Laboratories. Search this site. Laboratory ePortfolios. Laboratories. Gravimetric Analysis of an Unknown Carbonate.
Analysis of Hydrogen Peroxide Read the lab PDF before the lab. AP Chemistry Gravimetric Analysis of Metal Carbonate. Introduction: In this laboratory the identity of group 1 metal Carbonate is determined gravimetrically using a double replacement precipitation reaction.
AP Chemistry Lab #1 1 Gravimetric Analysis of the Percent Composition of a Copper Penny PURPOSE To determine the percentages of copper and zinc in a penny. AP Chemistry Gravimetric Analysis: The Determination of Phosphorus in Plant Food Objective: Refresh and practice basic laboratory skills involving weight, filtration, and proper measuring of volumes; additionally, will utilize the concept of percent composition .Download