One of the processes that are used for obtaining magnesium from seawater involve
ID: 996381 • Letter: O
Question
One of the processes that are used for obtaining magnesium from seawater involves a series of reactions of which the first three steps are described below. Write a balanced equation for each step. Make sure to mention the phases for each compound. During the first step, solid calcium carbonate, derived from seashells, decomposes into solid calcium oxide and gaseous carbon dioxide. The second step involves the formation of solid calcium hydroxide as the only product from the reaction of the solid calcium oxide (from step 1) with liquid water. In the third step, enough solid calcium hydroxide is dissolved in seawater to r with magnesium chloride (dissolved in seawater). This is a double replaceme reaction and the products (including their phases) can be predicted from the solubility table.Explanation / Answer
a) Decompsoition of CaCO3
CaCO3(s) --> CO2(g) + CaO(s)
b) Formation of Calcium hydroxide
CaO(s) + H2O(l) --> Ca(OH)2 (s)
c) Ca(OH)2 (s) + MgCl2(aq) --> Mg(OH)2(s) + CaCl2(aq)
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.