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During Project 3: Week 1 the goal was to synthesize an artificial kidney stone. If you...

During Project 3: Week 1 the goal was to synthesize an artificial kidney stone. If you were producing barium phosphate tribasic, what would be the correct stoichiometric coefficients for the reaction depicted below?

Ba(NO3)2 (aq) + Na3PO4 (aq) → Ba3(PO4)2 (s) + NaNO3 (aq)

a. 3, 2, 1, 6

b. 3, 1, 2, 4

c. 3, 2, 2, 1

d. 3, 1, 3, 1

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Answer #1

The reaction is:

Ba(NO3)2 (aq) + Na3PO4 (aq) → Ba3(PO4)2 (s) + NaNO3 (aq)

Balance Ba:

3 Ba(NO3)2 (aq) + Na3PO4 (aq) → Ba3(PO4)2 (s) + NaNO3 (aq)

Balance P:

3 Ba(NO3)2 (aq) + 2 Na3PO4 (aq) → Ba3(PO4)2 (s) + NaNO3 (aq)

Balance Na:

3 Ba(NO3)2 (aq) + 2 Na3PO4 (aq) → Ba3(PO4)2 (s) + 6 NaNO3 (aq)

The equation is now balanced

The coefficients are 3, 2, 1, 6

Answer: a

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