Question: PLEASE read the instructions carefully :). Instructions Your task is to complete the questions in the problem set. Please note that you must include

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PLEASE read the instructions carefully :).

Instructions Your task is to complete the questions in the problem set. Please note that you must include units throughout all of your calculations, and provide your answer in scientific notation to the correct number of significant digits. Questions 1. The equilibrium constant for the reaction below is 0.18 at 25 C. (4 marks) PC13(g) + Cl2(g) = PC15(g) The following concentrations were measured from the reaction vessel: 0.0400 M [PC13(9] [C12(9] [PC13(g)] = 0.0260 M 0.0035 M Is this system at equilibrium? Explain If not, in which direction will the system shift? 2. Write the solubility product constant (Ksp) expression for the following solution at 250 C. (2 marks) = Mga MgF2(8) + 2F (aq) 3. Given the solubility of MgF2(s) is 8.4 x 10-7M, calculate the value of Ksp for the reaction shown in question #2 at 250 C

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