132 DIY Science: Illustrated Guide to Home Chemistry Experiments
RQEWEvI UESTIOnS
q 1 : The molarity of a solution can never be more than a close approximation. List at least five factors that may cause the actual
molarity of a solution to differ from the calculated molarity of that solution.
q: 2 Although Table 7-1 assumes 100 mL of each solution, there are some solutions (such as silver nitrate) that you may want to
make up in smaller batches, because the chemical is expensive or because you expect to use smaller amounts of the solution.
Similarly, there are some solutions that you may want to make up in larger batches (such as sodium chloride), either because the
chemical is inexpensive or because you expect to use larger amounts of the solution. For what other reasons might you decide to
make up a smaller or larger batch of a particular solution?
q: 3 What characteristic or characteristics of a particular chemical make it easier to obtain a known mass of that chemical by
measuring a known volume of a solution of known concentration of that chemical rather than by weighing the solid chemical?