Calcium carbonate is a base, depending on the pH of the base, it will either increase or decrease the pH of the calcium carbonate very slightly.It will probably have little to no noticeable effects. Because calcium carbonate is a base, depending on the pH of the base, it will either increase or decrease the pH of the calcium carbonate very slightly.
One important buffer in surface waters is the carbon dioxide/bicarbonate/carbonate buffer. When water is in equilibrium with both CO 2 form the atmosphere and carbonate containing rock, the pH of the water is buffered to a pH of 8.3, close to the pKa of the weak acid bicarbonate HCO 3 - (pKa = 8.4). The buffered water resists changes to pH from additional acid or base. Acids in acid rain promote the dissolution of calcium carbonate by reacting with the carbonate anion. This produces a solution of bicarbonate. Because surface waters are in equilibrium with atmospheric carbon dioxide there is a constant concentration of carbonic acid, H 2 CO 3, in the water. When water is in equilibrium with both CO 2 form the atmosphere and carbonate containing rock, the pH of the water is buffered to a pH of 8.3, close to the pKa of the weak acid bicarbonate HCO 3 - (pKa = 8.4). The buffered water resists changes to pH from additional acid or base. Chalk may be used for its properties as a base. In agriculture, chalk is used for raising pH in soils with high acidity. The most common forms are CaCO 3 (calcium carbonate) and CaO (calcium oxide).  Calcium carbonate is alkaline, which is why it's used in many antacid products. Under normal atmospheric conditions, a 0.00047 M (0.019g/L) solution of calcium carbonate has a pH of 8.3. Best Answer: It is a base. coincidentally it is used often as an antacid. to find out there is to know, check out the link below: http://en.wikipedia.org/wiki/Calcium_car... Source(s): http://en.wikipedia.org/wiki/Calcium_car... ezelljm · 9 years ago. Calcium carbonate is the active ingredient in agricultural lime, and is created when calcium ions in hard water react with carbonate ions creating limescale. It is commonly used medicinally as a calcium supplement or as an antacid, but excessive consumption can be hazardous. Calcium carbonate will react with water that is saturated with carbon dioxide to form the soluble calcium bicarbonate. Calcium carbonate causes a unique reaction with acids. Upon contact with an acid-no matter the strength-it produces carbon dioxide. This provides geologists with a reliable test to identify calcium carbonate. This same phenomenon is important to the formation of caves. Calcium carbonate, or CaCO3, comprises more than 4% of the earth’s crust and is found throughout the world. Its most common natural forms are chalk, limestone, and marble, produced by the sedimentation of the shells of small fossilized snails, shellfish, and coral over millions of years. Calcium carbonate is a chemical compound with the formula Ca C O 3. It is formed by three main elements: carbon, oxygen and calcium. It is a common substance found in rocks in all parts of the world, and is the main component of shells of marine organisms, snails, coal balls, pearls, and eggshells. Calcium carbonate will react with water that is saturated with carbon dioxide to form the soluble calcium bicarbonate. Because calcium carbonate is a base, depending on the pH of the base, it will either increase or decrease the pH of the calcium carbonate very slightly. It will probably have … little to no noticeable effects. 3 people found this useful. Graham Howarth. It is found naturally in limestone and  in seashells.   …    vCalcium carbonate reacts with acids, releasing carbon  dioxide:   v    vCalcium carbonate will react with water that is saturated with  carbon dioxide to form the soluble calcium bicarbonate. No, calcium carbonate (CaCO3) is the calcium salt of carbonic acid (H2CO3). If a compound has the name of a metal in it (sodium, calcium, copper, etc) it is generally not an a … cid but a salt. A salt is formed when a metal ion or other positive ion takes the place of hydrogen in an acid. 2 people found this useful. It is found naturally in limestone and  in seashells.   …    vCalcium carbonate reacts with acids, releasing carbon  dioxide:   v    vCalcium carbonate will react with water that is saturated with  carbon dioxide to form the soluble calcium bicarbonate.
http://butane.chem.uiuc.edu/pshapley/GenChem1/L26/3.html http://butane.chem.uiuc.edu/pshapley/GenChem1/L26/3.html https://en.wikipedia.org/wiki/Chalk https://answers.yahoo.com/question/index?qid=20060917180148AA6D531 https://en.wikipedia.org/wiki/Calcium_carbonate http://www.ima-na.org/?page=what_is_calcium_carb https://en.wikipedia.org/wiki/Calcium_carbonate http://www.answers.com/Q/Is_calcium_carbonate_a_base_or_alkali http://www.answers.com/Q/Is_calcium_carbonate_a_base_or_alkali
why is calcium carbonate a base