Question

Given the following equation: BaCO3(s) + 2HCl(aq)→ BaCl2(aq) + H20(1) + CO2(g) 1.) Describe your observation of this reaction. ii.) Above rxn is the example of: 1. Metathesis rxn 2. Decomposition rxn 3. redox rxn iii.) Justify your answer for ii

Answer 1

Answer:

(1) ​​​​​​Observation: In the given reaction, Barium carbonate reacts with diluted hydrochloric acid to produce barium chloride ,water and carbon dioxide. Also, one mole of Barium carbonate reacts with 2 mol of HCl.

(2) Above reaction is example of 2.Decomposition reaction.

(3) Justification:

this is decomposition reaction, I will show you how the dissociation takes place,

The given reaction is :
BaCO3(s) + 2HCl(aq) -> BaCl2(aq) + CO2(g) + H2O(l)

BaCO3(s) + 2H+ + 2Cl- -> Ba2+ + 2 Cl- + CO2(g) + H2O(l).....cancel out 2Cl-

You end up with:

BaCO3(s) + 2H+ -> Ba2+ + CO2(g) + H2O(l) (dissociation reaction)

BaCO3 is insoluble and it doesn't dissociate in solution, but when it reacts with HCl, you will get BaCl2 (soluble, so dissociates) and CO2 (g) and H2O(l).( You can also use it and write in observation)

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