Inorganic Chemistry Answers

For a spontaneous change ΔS_total must be positive.

During a chemical change: ΔS_total = ΔS_system + ΔS_surroundings

In the ligand exchange reaction, where ‘en’ stands for ethylene diamine:

Co(NH₃)₆³⁺ + 3en → Co(en)₃³⁺ + 6NH₃

Discuss qualitatively the size and sign of the entropy change of the surroundings and the system, and comment on the stability of the ethylene diamine complex relative to the ammine. (4 marks)

In a hypothetical reaction, 17.45 g chloric acid, HClO₃, is reacted with 88.37 g tetraphosphorus decaoxide to form dichlorine heptoxide and an acid H₂P₄O₉. Calculate the amount of the excess reactant left over.

In a calorimetry experiment, butan-1-ol was completely combusted to heat 150.0 mL of water from 20.0◦C to 70.0◦C. The molar heat of combustion of butan-1-ol is 2670 kJmol–1.

If only 65.0% of the heat released by the combustion was absorbed by the water, what volume of carbon dioxide gas was produced at 25◦C and 100 kPa?

solid zinc metal reacts with sulfuric acid to form hydrogen gas and aqueous solution of zinc sulfate

The formula for hydrated iron(II) sulfate is FeSO4.xH2O.The value of x is a whole number between 1 and 10. It can be determined by carrying out a titration with 0.0200 mol/dm3potassium manganate(VII) (KMnO4) solution as follows:• dissolve a sample of FeSO4.xH2O in water to make 250 cm3 of solution • measure out 25.0 cm3 of this solution into a conical flask • add the KMnO4 solution using a burette until the end point is reached• record the volume of solution added • repeat the titration three more times .The table shows the results. Concordant results are those within 0.20 cm3 of each other. Select concordant results from the table. *

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How do I calculate what volume of water should be added to 10.0 mL of 6.00 M HCL to produce a 0.500 M HCl solution?