UNIT 3.8 REPRESENTATIONS OF SOLUTIONS
Chemistry is the study of matter and interactions. Chemistry overlaps with many other sciences.
Below is the contents for this sub unit.
REPRESENTATION OF SOLUTIONS
Look at the picture above. The large sphere represent silver and the black sphere represent chlorine. Look at beaker A (on the left), if the initial concentration of silver is 2 M, what is the concentration of the chlorine?
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Answer: So there are 3 Ag+ atoms and 6 Cl- atoms. If the 3 atoms represent 2M, the 6 atoms represent ????
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4 M.
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Look at beaker B. The Ag+ reacts with Cl- to form a solid. What is the final concentration of the chlorine?
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Answer: Only 3 free chlorine atoms remain therefore it is ???
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2 M
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For some this is easy but these can become complicated. We will practice these as they show up on almost every AP test.