Phosphorous pentachloride is used in the industrial preparation of many organic phosphorous compounds. equation i shows its preparation from pcl3 and cl2: (i) pcl3 (l) + cl2(g)  pcl5(s) use equation ii and iii to calculate ∆hrxs of equation i: (ii) p4 (s) + 6 cl2 (g)  4 pcl3 (l) ∆h = 1280 kj (iii) p4 (s) + 10 cl2 (g)  4 pcl5 (s) ∆h = 1774 kj

The graph above shows how the price of cell phones varies with the demand quantity. the equilibrium price for cell phones is where both supply and demand quantities equal $100, 5,000 5,000, $100

Consider the following reaction at equilibrium: c(s)+h2o(g)⇌co(g)+h2(g) predict whether the reaction will shift left, shift right, or remain unchanged upon each of the following disturbances. a) c is added to the reaction mixture. b) h2ois condensed and removed from the reaction mixture c) co is added to the reaction mixture d) h2 is removed from the reaction mixture.

Liquid ammonia is produced at high temperatures and under great pressure in a tank by passing a mixture of nitrogen gas and hydrogen gas over an iron catalyst. the reaction is represented by the following equation. n2(g) + 3h2(g) → 2nh3(g) changing all but one experimental condition will affect the amount of ammonia produced. that condition is a) increasing the concentration of both reactants b) changing the temperature within the tank c) decreasing the pressure within the tank. d) increasing only the amount of nitrogen present.