Question

Write the hydrolysis reactions that will occur when then each of the following salts is added...

Write the hydrolysis reactions that will occur when then each of the following salts is added to water:

NaBr, Na2CO3, NH4NO3, NaF, and C5H5NHCl. (Don’t forget to remove the spectator ions.)

Predict whether each solution will be acidic, basic, or neutral in each case.

Homework Answers

Answer #1

hydrolysis reactions = must react iwth water

a)

NaBr -- >Na+(aq) + Br-(aq)

neutral

b)

Na2CO3 --> 2Na+ + CO3-2(aq)

2Na+(aq) + CO3-2(aq) + H2O(l) <-> HCO3-(aq) + OH-(aq) + 2Na+(aq)

basic

c)

NH4NO3 --< NH4+(aq) + NO3-(aq)

NH4+(aq) + H2O(l) <-> H3O+ + NH3(aq)

then

NH4NO3 + H2O(l) --> NH3(aq) + H3O+(aq) + NO3-(aq)

acidic

d)

NaF

NaF --> Na+ + F-

F-(aq) + H2O(l) <-> HF(aq) + OH-(aq)

Na+(aq) + F-(aq) + H2O(l) <-> HF(aq) + OH-(aq) + Na(aq)

basic

e)

C5H5NHCl --> C5H5NH+(aq) + Cl -(aq)

C5H5NH+ + H"O <-> C5H5N H3O +

C5H5NHCl --> C5H5N(aq) + H3O+(aq) + Cl-(aq)

acidic

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