APFIVE Gravimetric Analysis of a Carbonate Mixture
A mixture of Na₂CO₃ and K₂CO₃ weighing 5.00 g is dissolved in water. When BaCl₂ is added, 4.93 g of BaCO₃ precipitates. What is the mass (to two decimal places) of Na₂CO₃ in the original mixture?
A
4.50 g
B
2.12 g
C
-5.08 g (not physically possible)
D
1.35 g
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