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- The following skeletal oxidation-reduction reaction occurs under acidic conditions. Write the balanced OXIDATION half reaction. Cr3+ + H3AsO4H3AsO3 + Cr2O72- Reactants Products1-What volume of 0.57 M NaCl solution contains 169.5 grams of NaCl? 2-Calculate the molality of a solution containing 175g of glucose (C6H12O6) in 1828 g of ethanol. 3- What volume of 0.87 N CaCO3 solution contains 183.9 grams of CaCO3? 7- How many Faraday is needed to deposit 5 moles of Gold (Au) from AuCl3 solution using electrolysis process. 8- Determine the oxidation number of the Chromium (Cr) in an unknown salt if electrolysis of a molten sample of this salt for 3 hours with a 15 amp current deposits 43.65 grams of Chromium metal at the cathode. 4-Oxidation number of C in H2CO3 isA solution containing 0.402 49 g of CoCl2 ? xH2O (a solid with an unknown number of waters of hydration) was exhaustively electrolyzed to deposit 0.099 37 g of metallic cobalt on a platinum cathode by the reaction Co21 1 2e2¡Co1s2. Calculate the number of moles of water per mole of cobalt in thereagent. A good approach is to find moles of Co, moles of CoCl2, mass of CoCl2, and, by difference, mass of H2O in the sample.
- Copper metal and aqueous iron (III) chloride were made to react to reduce iron to Fe2+ whileoxidizing copper to Cu2+. What mass (in g) of copper metal is needed to react with 50 mL of 20.5wt.% iron (III) chloride (solution density is 2.9 g/mL)?The following skeletal oxidation-reduction reaction occurs under acidic conditions. Write the balanced OXIDATION half reaction. Ag+ + Cr3+ Cr2O72- + Ag Reactants ProductsA secondary step in the process to produce ultra-pure silicon forelectronic applications involves silicon tetrachloride with magnesium in a redox reaction:__SiCl + __Mg→ __Si + __MgClBalance the equation above and assign the oxidation numbers (O.N.) of the atoms in the reactants and products. REACTANTS SIDEO.N. of Si in SiCl : ______O.N. of Cl in SiCl : ______O.N. of Mg: ______PRODUCTS SIDEO.N. of Si: ______O.N. of Mg in MgCl : _______O.N. of Cl in MgCl : ______
- A total of 1.740 F of electricity (1 F=1 mol e−) was required to electrodeposit all of the Zn and Co from a solution of ZnSO4 and CoSO4 . The mixture of Zn and Co that was deposited had a mass of 53.23 g. Calculate the masses of ZnSO4 and CoSO4 present in the original solution.(Balancing reactions) _C2H4 (g) + _O2 (g)-->_CO2 (g) +_H2O (g)1. What is the gravimetric factor of SO3 in BaSO4? 2. What is the normality of an oxidizing agent of a solution of potassium dichromate (K2Cr2O7) containing 8.906 g per 200 mL in the presence of acid? (Cr2O7-2 + 6Fe+3 + 14H+ → 2Cr3+ + 6Fe3+ + 7H2O) NOTE: Present complete solution with corresponding units.
- What is the product of the following reaction equation after balancing? If no reaction state that "Zn (s) + CuSO4 (aq)---->Write the chemical equation that describes the dissolution of alum in water and describe how many moles of aluminum and sulfate ions are produced when 1 mole of alum dissolves in sufficient water?Predict the products for the following single-displacement reaction and write a balanced molecular equation. Be sure to include all phase labels. Cu(s) + AgNO3(aq) ——> ?