ch 12 6th ediiton 12.65

[Jeremiah Hutauruk]

12.65 Determine whether an aqueous solution of each of the following salts has a pH equal to, greater than, or less than 7. If pH 7 or pH 7, write a chemical equation to justify your answer. (a) NH4Br; (b) Na2CO3; (c) KF; (d) KBr; (e) AlCl3;
(f) Cu(NO3)2.

[kamalkolluri]

We were just beginning to learn this in class, but I can help with the first one. In class, Lavelle gave NH4Cl as an example. So If you write the equation for NH4Br reacting with water, you get NH4Br+H2O --> NH3 + Br- + H3O+. So NH4Br would be acidic because when you put it in solution, it creates more Hydronium ions.