1. For a .10 M solution of each of the following substances determine (I) whethe

Question

1. For a .10 M solution of each of the following substances determine (I) whether the solution will be acidic or basic (ii) estimate the pH (iii) write the hydrolysis or dissociation reaction responsible for acid or base behavior.

a. (CH3)2NH2NO3                  b. CaCl2                    c. BaCO3

2. The Ksp of Mg(OH)2 is 8.9 x 10^-12.

a. calculate the molar solubility in water

b. predict how each of the following actions would change the solubility:

i: addition of Mg(NO3)2                      ii: addition of NaOH                            iii: addition of HCl

please show every step/ explain your answer. thank you!!!!

Explanation / Answer

1. For a .10 M solution of each of the following substances determine (I) whether the solution will be acidic or basic (ii) estimate the pH (iii) write the hydrolysis or dissociation reaction responsible for acid or base behavior.

a. (CH3)2NH2NO3 --> will become acidic, sinc it is a weak base / strong acid neutralized

b. CaCl2 --> neutral since no hydrolysys forms

c. BaCO3 --> basic , sinc eCO3-2 will form HCO3- +OH-

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