What mass of sediment can be obtained from 112 calcium oxide with carbonic acid?

| December 28, 2020 | education

To find the mass of the sediment, you need to write the equation of the chemical reaction. It looks like this: CaO + H2CO3 = CaCO3 + H2O. CaCO3 is sediment. Knowing the mass of calcium oxide, you can find its amount by the formula n (CaO) = m (CaO) / M (CaO), where M (CaO) is the molar mass of the oxide, which is equal to M (CaO) = M (Ca) + M ( O) = 40 + 16 = 56 g / mol. n (CaO) = 112g / 56g / mol = 2 mol. Next, we look at the reaction equation – we see that the amount of CaO and CaCO3 are the same, therefore n (CaCO3) = 2 mol. Find the molar mass of the precipitate M (CaCO3) = M (Ca) + M (C) + 3 * M (O) = 40 + 12 + 3 * 16 = 100 g / mol. Further, using the formula m (CaCO3) = n (CaCO3) * M (CaCO3), we find the mass of the sediment. m (CaCO3) = 2mol * 100g / mol = 200g.



One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.