ReciQues-04-2.pdf_, filename=_ReciQues-04-2.pdf_, filename=_ReciQues-04-2.pdf_, filename=_ReciQues

# ReciQues-04-2.pdf_, filename=_ReciQues-04-2.pdf_, filename=_ReciQues-04-2.pdf_, filename=_ReciQues

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Chem 109 Recitation Problems – Chapter 4 – Part 2 1 1. Read the following procedure and determine if there are any errors. A student wants to make 1.00L of a 0.500M NaOH solution (molar mass of NaOH is 40.00g/mol). The student weighs out 40.00 grams of solid NaOH and dissolves it in some water. The student then adds water until the total volume is 1.00L and stirs. What error(s) does(did) the student make in making the solution? A. The student weighs out too much NaOH. B. The student weighs out too little NaOH. C. The student should have added exactly 1.00L of water to the 40.00 g NaOH. D. Both a. and c. E. Both b. and c. F. The student did not make any errors in the procedure described above. 2. What would be the concentration of the Cl ion in a solution made by dissolving 0.0100 mole of CaCl 2 in 100.0 mL of 0.100 M NaCl? (Assume dissolving the solid does not change the volume.) A. 0.100 M B. 0.110 M C. 0.120 M D. 0.200 M E. 0.300 M F. None of the above are correct. 3.

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## This note was uploaded on 04/12/2008 for the course CHEM 109 taught by Professor Malina during the Spring '08 term at UNL.

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