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2. Consider each of the reactions and answer the following questions. (8PTS) please show all work...

2. Consider each of the reactions and answer the following questions. (8PTS) please show all work

a. For Potassium carbonate (solid) plus aqueous fumaric acid (H2C4H2O4) , what is the base and what gas is produced from it? _____________ _____________

b. For Aqueous sodium phosphate plus aqueous barium nitrate, what are the spectator ions? _____________ _____________

c. For Pyruvic acid (HC3H3O3) undergoing complete combustion, what type of acid is pyruvic acid? _____________ _____________

d. For Zinc (solid) reacting with aqueous hydrochloric acid forming aqueous zinc(II) chloride and ????, what is the oxidizing agent and what gas is produced? _____________ _____________

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Answer #1

(a) K2CO3(aq) + H2C4H2O4(aq) ---------> K2C4H2O4(aq) + CO2(g) + H2O(l)

Base is K2CO3

Gas produced is carbon dioxide(CO2).

(b) 2Na3PO4(aq) + 3Ba(NO3)2(aq) ---------> Ba3(PO4)2(s) + 6NaNO3(aq)

Net ionic : 3Ba^2+(aq) + 2PO4^3-(aq) -------> Ba3(PO4)2(s)

spectator ions : Na+(aq) , NO3- (aq)

(c) 2HC3H3O3 + 5O2 ------------> 6CO2 + 4H2O

(d) Zn(s) + HCl(aq) ---------> ZnCl2(aq) + H2(g)

Zn is oxidised to Zn2+ and H+ is reduced to H2.

So, HCl is oxidising agent.

Zn is reducing agent.

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