Problem: Which of the following 0.10 M solutions will have a pH less than 7.0?W. NaClX. Na2CO3Y. NH4ClZ. Al(NO3)3A. X and Z onlyB. X and Y onlyC. Y and Z onlyD. W and Y onlyE. W and X only

FREE Expert Solution

We’re being asked to determine the solution that will have a pH less than 7.0.


Ionic salts are made up of positively charged ion (cation) and a negatively charged ion (anion). To determine if the ionic salt would be acidic, basic, or neutral, we need to identify the acidity or basicity of the cation and anion.

For cations:

transition metal

▪ charge of +2 or higheracidic
▪ less than +2 → neutral solution

main group metal

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Problem Details

Which of the following 0.10 M solutions will have a pH less than 7.0?

W. NaCl

X. Na2CO3

Y. NH4Cl

Z. Al(NO3)3

A. X and Z only

B. X and Y only

C. Y and Z only

D. W and Y only

E. W and X only