Rec4_f04 - Recitation Activity 4(Chem 121 1 Chapter 4 If...

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Recitation Activity 4 (Chem 121) Chapter 4 1. If you mixed together aqueous solutions of the following reactants, in which cases would you expect to observe a precipitation reaction? If a reaction does take place write a balanced chemical equation and the net ionic equation corresponding to the reaction. a. Lead (II) nitrate + Copper (II) chloride b. Sodium hydroxide + Barium hydroxide 2. Which combination will produce a precipitate? A) NaC 2 H 3 O 2 (aq) and HCl (aq) B) NaOH (aq) and HCl (aq) C) AgNO 3 (aq) and Ca(C 2 H 3 O 2 ) 2 (aq) D) KOH (aq) and Mg(NO 3 ) 2 (aq) E) NaOH (aq) and HCl (aq) 3. Oxidation cannot occur without _______________________. Explain? (a) air (b) oxygen (c) reduction (d) acid (e) water 4. Please provide the oxidation state for each element in the following equation and indicate which element is oxidized and which is reduced: P 4 + HClO + H 2 O ° H 3 PO 4 + HCl 5. How many moles of bromide ions are in 0.500 L of a 0.300 M solution of AlBr 3 ? How many bromide ions are there?
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6. You are given the following reagents and labware: A bottle containing zinc powder
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