17.0 g Ba(NO3)2 (M = 261.32) is mixed with 11.5 g of an alkali metal sulfate and the precipitated Ba — Laboratory Chemistry Question
Question
17.0 g Ba(NO3)2 (M = 261.32) is mixed with 11.5 g of an alkali metal sulfate and the precipitated BaSO4 (M = 233.37) is collected by filtration, placed in a tared crucible, and the crucible heated to drive off water. The mass of BaSO4 obtained is 15.4 g. Which conclusion is best supported by the data?
A.
The sulfate salt used was Na2SO4 (M = 142.05).
B.
The sulfate salt used was K2SO4 (M = 174.27).
C.✓ Correct
The BaSO4 was not heated long enough to drive off all the water.
D.
Some of the BaSO4 was spilled before it was transferred to the crucible.
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