101-04-slides-1 - are Cu metal and Mg 2+ ions. Electrons...

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Which of the following reactions correctly shows the dissociation of a salt in water? (choose all that are correct) 1 2 3 4 5 0 0 0 0 0 0 of 5 1. CaSO 4 Ca 2+ + SO 4 2- 2. 2NaNO 3 2Na + + N 2 + 3O 2 3. K 3 PO 4 K 3 3+ + PO 4 3- 4. CaCO 3 Ca 2+ + C + O 3 2- 5. NaHCO 3 Na + + HCO 3 - 2011 D.B. King
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Which is the limiting reactant in the following unbalanced reaction between 1.0 mol SO 2 , 2.0 mol CaCO 3 , and 3.0 mol O 2 ? SO 2(g) + CaCO 3(s) + O 2(g) CaSO 4(S) + CO 2(g) 1 2 3 0% 0% 0% 0 of 5 1. SO 2 2. CaCO 3 3. O 2 2011 D.B. King
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What is the number of moles of CaSO 4 (S) that can be produced by allowing 1.0 mol SO 2 , 2.0 mol CaCO 3 , and 3.0 mol O 2 to react? SO 2(g) + CaCO 3(s) + O 2(g) CaSO 4(S) + CO 2(g) 1 2 3 4 5 0% 0% 0% 0% 0% 0 of 5 1. 0.5 mol 2. 0.67 mol 3. 1.0 mol 4. 2.0 mol 5. 3.0 mol 2011 D.B. King
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cleaning : bleach, chlorine, and peroxide food : “burn” the foods we eat industry : production of iron, steel, other metals, and consumer goods Applications of Oxidation and Reduction 2011 D.B. King
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Redox Reaction: Mg + Cu 2+ Mg 2+ + Cu … the products
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Unformatted text preview: are Cu metal and Mg 2+ ions. Electrons are transferred from Mg metal to Cu 2+ ions and Mg Cu 2+ electron loss/gain? terminology? job in reaction? Mg (s) + Cu 2+ (aq) Mg 2+ (aq) + Cu (s) 2011 D.B. King Rules for Assigning Oxidation States 1. uncombined element = 0 2. charge on monatomic ion 3. F = -1; other halogens usually -1 a) exception : halogen combined with more electronegative element 4. H usually = +1 5. O usually = -2 6. sum of ox states = charge on molecule/ion 2011 D.B. King What are the oxidation numbers assigned to the atoms of each element? (a) KClO 4 (b) Cr 2 O 7 2 (c) CaCl 2 2011 D.B. King What is the oxidation number of Cu in the following compounds: CuCN and CuSO 4 ? 1 2 3 4 5 0% 0% 0% 0% 0% 1. +1 and +1 2. +1 and +2 3. +2 and +1 4. +2 and +2 5. 0 and 0 0 of 5 2011 D.B. King...
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101-04-slides-1 - are Cu metal and Mg 2+ ions. Electrons...

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