Practice Quiz 2 3 9 4 5 Solutions of phosphoric acid and barium hydroxide are mixed to form solid barium phosphate and liquid water 1 Writing and Balancing Equations a Write the balanced molecular equation for the situation described above b Write the balanced total ionic equation for the situation above c Write the balanced net ionic equation for the precipitate that is formed during the reaction d Write the balanced net ionic equation for the neutralization of the first hydrogen 2 Stoichiometry a 100 grams of phosphoric acid react with 100 grams of barium hydroxide Formula weights are 98 0 g mol and 171 g mol respectively i What is the maximum mass of water that the reaction will produce ii If only 17 1 grams of water are produced what is the percent yield for the reaction b SUPER HARD QUESTION What mass of barium hydroxide must be added to 250 mL of water to completely neutralize 500 mL of a 0 61 M phosphoric acid solution c What is the molar concentration of each ion in the following solutions i 0 25 M sodium sulfide ii 1 37 M silver I nitrate iii 0 57 M potassium iodate d What mass of each salt is in the following i 0 25 M sodium sulfide 250 mL ii 1 37 M silver I nitrate 1 L iii 0 57 M potassium iodate 55 mL 3 Oxidation Reduction Reactions and Oxidation States a Show that the following reaction is a redox reaction by writing its half reactions 2Na F2 2NaF b Find the oxidation state of the indicated element in the following i KMnO2 Mn ii FeCr2O7 Cr iii H2O2 O c Pb s PbO2 s 2H2SO4 aq 2PbSO4 s 2H2O l i Show that this reaction is a disproportionation redox reaction by writing any necessary half reactions
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