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- (ii) Br NH HNO₂ H2SO4Consider the series of reactions to synthesize the alum (KAl(SO4 )2 · xH2O(s)) from the introduction. (a) Assuming an excess of the other reagents, from one mole of aluminum Al (s), how many moles of alum will be produced? (b) Assuming an excess of the other reagents, from one mole of potassium hydroxide KOH, how many moles of alum will be produced? (c) Assuming an excess of the other reagents, from one mole of sulfuric acid H2SO4 , how many moles of alum will be produced? (d) If you start the synthesis with 1.00 g of Al, 40.0 mL of 1.50 M KOH, and 20.0 mL of 9.00 M H2SO4 , which of the three will be the limiting reagent? (e) Assuming that the product is anhydrous (that there are no waters of hydration), calculate the theoretical yield of alum, in grams, based on the amounts of reagents in part (d). 3. Consider the nickel salt: (NH4 )2Ni(SO4 )2 ·y H2O (Ammonium Nickel Sulfate Hydrate), where y is the number of coordinated waters. (a) Assuming that the product is anhydrous (y = 0),…Predict the product(s) and write a balanced equation for each of the following redox reactions:(a) Pentane (C5H12) +oxygen→ (b) Phosphorus trichloride +chlorine→ (c) Zinc +hydrobromic acid→ (d) Aqueous potassium +iodide bromine→ (e) Write a balanced net ionic equation for (d).
- Because the oxide ion is basic, metal oxides react readily with acids.(a) Write the net ionic equation for the following reaction:FeO1s2 + 2 HClO41aq2¡Fe1ClO4221aq2 + H2O1l2(b) Based on the equation in part (a), write the net ionicequation for the reaction that occurs between NiO(s) and anaqueous solution of nitric acid.Predict the product(s) and write a balanced equation for each of the following redox reactions: (a) Pentane (C5H12) + oxygen→ (b) Phosphorus trichloride+ine→ (c) Zinc 1 hydrobromic acid → (d) Aqueous potassium iodide + bromine → (e) Write a balanced net ionic equation for (d).Predict the products from the following chemical reactions. (a) HNO3 + Ba(OH)2 ⟶ (b) CaCl2 + CsOH ⟶ (c) Ammonium Phosphate + Magnesium Sulfate ⟶
- (f) Balance the following equations: CO2+H2O (i) C4H10+ O₂ → (ii) H3PO4 + Mg(OH)2 (iii) (NH4)2Cr2O7 → Cr₂O3 + H₂O + N₂ -> Mg3(PO4)2 + H₂OThe following reactions are all similar to those of the industrial chemicals. Complete and balance the equations for these reactions: (a) reaction of a weak base and a strong acid NH3 + HClO4 ⟶ (b) preparation of a soluble silver salt for silver plating Ag2CO3 + HNO3 ⟶ (c) preparation of strontium hydroxide by electrolysis of a solution of strontium chloride SrCl2 (aq) + H2 O(l) ⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯→(c) Suggest how the following boron species could be prepared, showing any intermediates. -B(OH)2 B(OH)2
- Complete and balance the following equations: (a) ZNCO3(s) A, (b) BaC2(s) + H2O(I) (c) C,H2(8) + O2(8) (d) CS2(8) + O2(8) → (e) Ca(CN)2(s) + HBr(aq)The price of (a) CoCl2•6H2O is $25.00 per 100 g and (b) NH,CI was $11.35 per 500 g. Calculate the costs of each of these reagents used in this preparation. If cost were a determining factor which of these would be used as a limiting reagent? (a)2. (Balance the equation) FeCl+NaOH>Fe(OH);+Nacl