A 1.00 liter solution contains 0.27 M ammonia and 0.35 M ammonium iodide. If 0.088 moles of barium hydroxide are added to this system, indicate whether the following statements are true or false. (Assume that the volume does not change upon the addition of barium hydroxide.)

A. The number of moles of NH3 will increase
B. The number of moles of NH4+ will remain the same
C. The equilibrium concentration H3O+ will increase
D. The pH will remain the same
E. The ration of [NH3]/[NH4+] will increase

the correct answer is b. a strong acid completely dissociates to its ions when dissolved in water. completely dissociates to and ions. a is incorrect because does not fully ionize to and ions and some remain as the compound . c and d are incorrect because, and do not fall into the category of bronsted lowry acids. a bronsted lowry acid is a proton donor and since both molecules do not have a proton to donate they are not bronsted lowry acids. likewise,   if we use the lewis acid definition, they cannot be acids. a lewis acid is an electron pair acceptor. both and have a complete octet so can not accept any electrons which disqualifies them as acids.

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