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A saturated solution of barium carbonate was stored in a flask - HSC - SSCE Chemistry - Question 11 - 2019 - Paper 1
Question 11
A saturated solution of barium carbonate was stored in a flask. Solid barium carbonate containing radioactive carbon-14 was added to the solution. The mixture was al... show full transcript
Worked Solution & Example Answer:A saturated solution of barium carbonate was stored in a flask - HSC - SSCE Chemistry - Question 11 - 2019 - Paper 1
Step 1
Determine where radioactivity is likely found
Answer
In this scenario, solid barium carbonate containing radioactive carbon-14 is added to a saturated solution of barium carbonate. After the mixture stands for several days, filtering separates the solid residue from the liquid filtrate.
Since barium carbonate (both solid and dissolved) does not remove the radioactive carbon-14 during the filtration process, the radioactivity can be expected in both the solid residue and the liquid filtrate. Thus, the correct answer is:
- C. both residue and filtrate.