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Exam1reviewQs

Exam1reviewQs - 4 NH3(g 5 O2(g>4 NO(g 6 H2O(g a If the...

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Hydrogen sulfide reacts with sulfur dioxide to give H2O and S, H2S + SO2 = H2O + S(solid), unbalanced. If 6.0 L of H2S gas at 750 torr produced 3.2 g of sulfur, calculate the original temperature of the H2S in °C. A 10.73 g sample of PCl5 is placed in a 4.00 L flask at 200°C. a) What is the initial pressure of the flask before any reaction takes place? b) PCl5 dissociates according to the equation: PCl5(g) --> PCl3(g) + Cl2(g). If half of the total number of moles of PCl5(g) dissociates and the observed pressure is 1.25 atm, what is the partial pressure of Cl2(g)?

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1 mole of oxygen gas and 2 moles of ammonia are placed in a container and allowed to react at 850 °C according to the equation:
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Unformatted text preview: 4 NH3(g) + 5 O2(g) -->4 NO(g) + 6 H2O(g) a. If the total pressure in the container is 5.00 atm, what are the partial pressures for the three gases remaining? b. Using Graham's Law, what is the ratio of the effusion rates of NH3(g) to O2(g)? Josh Shokorzadeh, the winter intern, has just broken the cooling system to the main helium tank. Josh tells you not to be worried; the tank can withstand up to 40.0 atm of pressure before exploding. Before Josh's accident, the tank was subjected to 10.0 atm. The tank was originally at 250 K, but it's a hot summer day, and you fear its temperature may rise to 350 K. Should you believe Josh?...
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