http://wiki.answers.com/Q/How_do_you_convert_alkalinity_as_HCO3_to_CaCO3"
CaCO3, which is calcium carbonate.
The alkalinity of water is primarily due to the presence of bicarbonate (HCO3⁻), carbonate (CO3²⁻), and hydroxide (OH⁻) ions, which can neutralize acids. However, if CO3²⁻ and HCO3⁻ are present simultaneously without the corresponding acid or base to balance them, they would neutralize each other, leading to a stable pH and effectively reducing the overall alkalinity. In essence, for alkalinity to be significant, these ions must exist in a way that allows them to contribute to acid neutralization rather than cancel each other out. Thus, the concurrent presence of all three ions would not result in high alkalinity.
no , is the chemical formula by benda Benjamen
HCO3- is a anion (bicarbonate); HCO3+ don't exist.
Alkalinity primarily refers to the capacity of water to neutralize acids and is commonly categorized into three types: bicarbonate (HCO3-), carbonate (CO3^2-), and hydroxide (OH-). Bicarbonate is the most prevalent form in natural water systems, while carbonate becomes more significant at higher pH levels. Hydroxide ions contribute to alkalinity when pH levels are extremely high. Together, these forms help buffer pH changes in aquatic environments.
CaCO3, which is calcium carbonate.
Alkalinity is measured as CaCO3 Eq (equivalents) because it represents the amount of acid needed to lower the pH of the water to a certain level based on the buffering capacity provided by carbonate ions. Expressing alkalinity in terms of CaCO3 Eq standardizes the measurement and makes it easier to compare between different water samples or systems.
•dissolution of carbonates: -CaCO3 + H+à Ca2+ + HCO3-
The equation is H2O + CO2 + CaCO3 --> Ca(HCO3)2
no , is the chemical formula by benda Benjamen
•Individual reactions may be repetitive but are different: •Consider dissolution of carbonates: -CaCO3 + H+ > Ca2+ + HCO3-
it is caused due to the salts of calcium and magnesium carbonates and bicarbonates. CaCO3, MgCO3, Ca(HCO3)2, Mg(HCO3)2
# The shells aren't made of calcium, they're made of calcium carbonate. # Calcium carbonate is the salt of a strong base and a weak acid, and is therefore weakly alkaline. I understand that you can make CaCO3 by the following process: HCO3 + CaOH => CaCO3 +H2O But once you have made CaCO3 ( a slightly alkaline salt) from the acid and base, what is happening to the CaCO3 in the H2O that is making the water more basic? In other words, how can CaCO3 have anything to do with the lone OH- ions present in the water?
The correct unit for alkalinity is usually expressed in milligrams per liter (mg/L) or parts per million (ppm) of calcium carbonate (CaCO3) equivalent.
the chemical equation for the decomposition of calcium hydrogen carbonate is given below.Ca(HCO3)2(aq) → CO2(g) + H2O(l) + CaCO3(s).It is a balance chmeical reaction.
Alkalinity can be calculated by titrating a water sample with a strong acid until the pH reaches a specific endpoint. The amount of acid required to reach this endpoint is used to determine the concentration of alkalinity in the water sample. Typically, alkalinity is expressed in units of milligrams per liter (mg/L) of calcium carbonate (CaCO3).
CaHCO3- Calcium bi carbonate. CaCO3- Calcium carbonate