Which salts cannot be prepared by an acid-alkali titration method? And why?
A. Sodium sulfate
B. Ammonium sulfate
C. Potassium nitrate
D. Iron(II) nitrate
I expect that is iron(II) nitrate but I'll bet some enterprising chemist could figure a way to do that.
gosh damn it ammonuim sulfate
To determine which salts cannot be prepared by an acid-alkali titration method, we need to analyze the chemical properties of each salt and identify any particular characteristics that would hinder their preparation using this method.
A. Sodium sulfate: This salt can be prepared by an acid-alkali titration since it is formed from reacting a strong acid (sulfuric acid) with a strong base (sodium hydroxide). Thus, sodium sulfate can be prepared using the acid-alkali titration method.
B. Ammonium sulfate: Similarly, ammonium sulfate can be prepared by the acid-alkali titration method. It is formed by reacting a strong acid (sulfuric acid) with a weak base (ammonia). Hence, acid-alkali titration can be utilized to produce ammonium sulfate.
C. Potassium nitrate: This salt cannot be prepared via acid-alkali titration since it is formed by the reaction of a strong acid (nitric acid) with a strong base (potassium hydroxide). In an acid-alkali titration, we require a weak acid and a strong base or a weak base and a strong acid. Therefore, potassium nitrate cannot be prepared using this method.
D. Iron(II) nitrate: Similarly to potassium nitrate, iron(II) nitrate cannot be prepared by an acid-alkali titration method because it is formed by reacting a strong acid (nitric acid) with a strong base (iron(II) hydroxide). Once again, we need either a weak acid and strong base or a weak base and strong acid for an acid-alkali titration to work.
In conclusion, the salts that cannot be prepared by an acid-alkali titration method are:
C. Potassium nitrate
D. Iron(II) nitrate
This is due to the requirement of a weak acid and strong base or weak base and strong acid for the successful execution of an acid-alkali titration.