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The thiocyanate polyatomic ion, SCN-, is commonly called a pseudohalogen because it acts very much like halide ions

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The thiocyanate polyatomic ion, SCN-, is commonly called a pseudohalogen;because it acts very much like halide ions. For example, we know that the pure;halogens consist of diatomic molecules, such as Cl2. Thiocyanate ions form;similar molecules in the following reaction;2NaSCN + 2H2SO4 + MnO2? (SCN)2 + 2H2O + MnSO4 + Na2SO4;a. Write a conversion factor that could be used to convert between moles of;NaSCN and moles of (SCN)2.;b. How many moles of (SCN)2 form when 0.50 moles of NaSCN react;completely?;c. What is the maximum number of moles of (SCN)2 that could form in the;combination of 4 moles of NaSCN and 3 moles of MnO2?;d. Write a conversion factor that could be used to convert between moles of;sulfuric acid, H2SO4, and moles of manganese(II) sulfate, MnSO4.;e. What is the minimum number of moles of H2SO4 that must react to form;1.7752 moles of manganese(II) sulfate?

 

Paper#15558 | Written in 18-Jul-2015

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