Use the additional data and your answer to part (a) to determine the enthalpy change for the reaction of NH3 with SCl2 The S4N4 molecule has a rich reaction chemistry including both oxidation and reduction reactions. Treatment of S4N4 with an excess of AsF5 in sulfur dioxide generates the salt [S4N4][AsF6]2 whereas treatment with excess SnCl2·2H2O in methanol yields S4N4H4 Write balanced equations for these two reactions E(S–S) = 226 kJ mol–1 = 946 kJ mol–1 E(N≡N) E(S–N) = 273 kJ mol–1 E(S=N) = 328 kJ mol–1 = 77 kJ mol–1 = 88 kJ mol–1 Hvap(S8) Hvap(S4N4) (NH3) = 45.9 kJ mol–1 (SCl2) = 50.0 kJ mol–1 fH fH – – (HCl) = 92.3 kJ mol–1 fH – Sulfur compounds Identify the compounds A to D in the scheme shown below and describe their structures with the aid of suitable sketches. You may wish to refer to the following additional information : Compound is a yellow liquid containing 52.5% Cl and 47.5% S. A Compound B is a moisture-sensitive, red liquid. Compound C is a colourless liquid containing 59.6% Cl, 26.95% S and 13.45% O. Compound D has a relative molar mass of 134.96 g mol–1. Compound D can also be obtained by direct reaction of C with O2. Reactions of sodium The scheme below summarises some reactions of sodium metal.
Use the additional data and your answer to part (a) to determine the enthalpy change for the reaction of NH3 with SCl2 The S4N4 molecule has a rich reaction chemistry including both oxidation and reduction reactions. Treatment of S4N4 with an excess of AsF5 in sulfur dioxide generates the salt [S4N4][AsF6]2 whereas treatment with excess SnCl2·2H2O in methanol yields S4N4H4 Write balanced equations for these two reactions E(S–S) = 226 kJ mol–1 E(N≡N) = 946 kJ mol–1 E(S–N) = 273 kJ mol–1 E(S=N) = 328 kJ mol–1 Hvap(S8) = 77 kJ mol–1 Hvap(S4N4) = 88 kJ mol–1 fH (NH3) = – 45.9 kJ mol–1 fH (SCl2) = – 50.0 kJ mol–1 fH (HCl) = – 92.3 kJ mol–1 Sulfur compounds Identify the compounds A to D in the scheme shown below and describe their structures with the aid of suitable sketches. You may wish to refer to the following additional information : Compound A is a yellow liquid containing 52.5% Cl and 47.5% S. Compound B is a moisture-sensitive, red liquid. Compound C is a colourless liquid containing 59.6% Cl, 26.95% S and 13.45% O. Compound D has a relative molar mass of 134.96 g mol–1. Compound D can also be obtained by direct reaction of C with O2. Reactions of sodium The scheme below summarises some reactions of sodium metal.