a. Write and balance the reaction between the magnesium ion, the bicarbonate ion

Question

a. Write and balance the reaction between the magnesium ion, the bicarbonate ion and heat.


b. Write and balance the scale removal reaction involving the scale generated in the above question with HCl.


c. In a sour water system (H2S) there is an opportunity for ferrous sulphide to form along with the calcium and magnesium carbonate scales. If acidizing is used to clean away scales, what danger exists? Indicate this by using a balanced reaction.

Explanation / Answer

1.) Mg^++ + [H(CO3)]^- 2 ---heat---> MgCO3 + CO2 + H2O 2.) MgCO3 + 2HCl ---> MgCl2 + CO2 + H2O 3.) FeS(s) + 2HCl(aq) --> FeCl2 + H2S(g)

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