Exam4 - Name 1 Consider the following equilibrium aA(s...

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Name: ___________________________________________________________ 1. Consider the following equilibrium: aA(s) + bB(aq) dD(aq) + eE(aq) Write the expression for the equilibrium constant K eq . 10 pts K eq = 2. Consider the following equilibrium: CaCl 2 (s) Ca +2 (aq) + 2 Cl - (aq) Calculate the equilibrium constant at 298K from the thermodynamic data provided. 10 pts 3. Consider a saturated solution of MgCl 2 at equilibrium with excess MgCl 2 (s): MgCl 2 (s) Mg +2 (aq) + 2 Cl - (aq) H o = + 585kJ/mol How do the following changes affect the amount of dissolved MgCl 2 ? a) More MgCl 2 (s) is added. b) Some NaCl is dissolved in the solution. 2 pts each c) Some NaNO 3 is dissolved in the solution. d) Some pure water is added to the solution. e) The solution is heated.
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4. A solution has a pH of 2.43. a) What is [H 3 O + ]? b) What is [OH - ]? 2.5 pts each c) What is pOH? d) Would you describe the solution as acidic or basic? 5. List 5 strong acids. You can use name or chemical formula.
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Exam4 - Name 1 Consider the following equilibrium aA(s...

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