(a)
Interpretation:
The balanced equation for the overall cell reaction has to be written.
(b)
Interpretation:
The amount of adiponitrile (in kilograms) that will be obtained when acrylonitrile will be electrolytically reduced to adiponitrile at given time and current has to be calculated.
Concept Introduction:
Moles of Electrons:
The charge on one mole of electrons is
Mass of Substance:
The mass of a substance is calculated from the moles of electrons and atomic weight of the substance. Using the conversion factors, the mass of substance is calculated from the formula shown below,
The flow chart below is useful in the calculation of grams or litres of the product.
Figure 1
(c)
Interpretation:
The quantity (in litres) of Oxygen at
Concept Introduction:
The flow chart below is useful in the calculation of grams or litres of the product.
Figure 1
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General Chemistry: Atoms First
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- In an analytical determination of arsenic, a solution containing arsenious acid, H3AsO3, potassium iodide, and a small amount of starch is electrolyzed. The electrolysis produces free iodine from iodide ion, and the iodine immediately oxidizes the arsenious acid to hydrogen arsenate ion, HAsO42. I2(aq)+H3AsO3(aq)+H2O(l)2I(aq)+HAsO42(aq)+4H+(aq) When the oxidation of arsenic is complete, the free iodine combines with the starch to give a deep blue color. If, during a particular run, it takes 65.4 s for a current of 10.5 mA to give an endpoint (indicated by the blue color), how many grams of arsenic are present in the solution?arrow_forwardBalance each of the following reactions, and identify the type of reaction: C2H4(g)+O2(g)Δ→CO2(g)+H2O(g)arrow_forwardThe following skeletal oxidation-reduction reaction occurs under basic conditions. Write the balanced REDUCTION half reaction. N2H4 + NiO2- →N2 + Ni(OH)2 Reactants Productsarrow_forward
- Identify the oxidizing and reducing agent 4NaClO3 (aq) + 2 SO2 (aq) + 2H2SO4 -> 4NaHSO4 (aq) + 4ClO2 (g)arrow_forwardFor a reaction with ΔH° = 40 kJ/mol, decide which of the following statements is (are) true. Correct any false statement to make it true. (a) The reaction is exothermic; (b) ΔG° for the reaction is positive; (c) Keq is greater than 1; (d) the bonds in the starting materials are stronger than the bonds in the product; and (e) the product is favored at equilibrium.arrow_forwardWhat is oxidized in this reaction? Fe(s) + HCl(aq) → FeCl3(aq) + H2(g)arrow_forward
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