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Unformatted text preview: Antonio Alarcon 3/31/08 NATS 101: The World We Create Homework Assignment #8 1a) K 2 + SO 4 2- (aq) + Co 2+ Br 2- (aq) ________ + ________ K 2 + SO 4 2- (aq) + Co 2+ Br 2- (aq) Co 2+ SO 4 2- (s) + 2K + Br- (aq) Looking into the basics of a double displacement reaction, one notices the following: o Involve two chemical compounds o Create products with similar bonding patterns o Follow the general reaction of: AB + CD AD + BC In replacing the variables A-D, one achieves the below listed formula: o A = K 2 + o B = SO 4 2- o C = Co 2+ o D = Br 2- K 2 + SO 4 2- (aq) + Co 2+ Br 2- (aq) Co 2+ SO 4 2- (s) + 2K + Br- (aq) 1b) Throughout the above double displacement reaction, two products are formed Co 2+ SO 4 2- and 2K + Br- . To determine which will most likely form a precipitate, one needs to assess both products in terms of polarity, as determined by electronegativity. 2K + Br- , having both an element with 1 electron within its outer shell, K, and an element with 7 electrons within its outer shell, Br, it is safe to assume...
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This note was uploaded on 04/03/2008 for the course NATS 101 taught by Professor Allister during the Spring '08 term at University of Arizona- Tucson.
- Spring '08