Na3PO4(aq) + Ca(NO3)2(aq) → NaNO3(aq) + Ca3(PO4)2(s)
Determine the amount of NaNO3(aq) formed in the reaction if 3.30 moles of Ca(NO3)2(aq) reacts with an excess of Na3PO4(aq) and the percent yield of NaNO3(aq) is 71.0%.
A. 6.24 moles
B. 9.30 moles
C. 4.69 moles
D. 7.50 moles
E. 8.96 moles
Balanced equation for this reaction is,
2Na3PO4 + 3Ca(NO3)2 -----> Ca3(PO4)2 + 6NaNO3
3 moles of Ca(NO3)2 gives 6 moles of NaNO3.
1 mole of Ca(NO3)2 gives 2 moles of NaNO3.
3.30 moles of Ca(NO3)2 will give 2×3.30 moles NaNO3.
= 6.60 moles NaNO3.
Actual yield ° percent yield/100 × theoretical yield.
Actual yield = 71/100 × 6.60
= 4.69 moles
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