Predict whether the following solutions are acidic, basic, or nearly neutral:

a. NaBr,
b. K2SO3,
c. NH4NO2,
d. Cr(NO3).

the answer is neutral, basic, acidic, acidic and i am not sure why

3 answers

Look to see what the hydrolysis products would be. For example, IF Na^+ and Br^- hydrolyzed, they would produce NaOH and HBr but NaOH is a strong base and HBr is a strong acid; therefore, neither hydrolyze. Thus, neutral.
K2SO3. If K^+ and SO3^- hydrolyze, they produce KOH and H2SO3. You know KOH is a strong base. K^+ doesn't hydrolyze. H2SO3 is a weak acid, the SO3^- DOES hydrolyze, and K2SO3 is basic (strong base/weak acid gives basic soln).
I would have classified NH4NO2 as nearly neutral (apparently that was one of the choices) since NH3 and HNO2 are weak base/weak acid. The pH is 6.27 which is almost neutral.
a. NaBr - nearly neutral
b. K2SO3 - basic
c. NH4NO2 - acidic
d. Cr(NO3)3 - acidic
acide
Similar Questions
    1. answers icon 1 answer
    1. answers icon 3 answers
  1. A high concentration of hydrogen ions means a solution is what?Responses neutral neutral neither acidic or basic neither acidic
    1. answers icon 1 answer
  2. Hello! Please correct me if I'm wrong.For the following compound, predict whether the solution is acidic, basic, or neutral and
    1. answers icon 0 answers
more similar questions