Sample Problem 2.9
Recognizing Incorrect Names or Formulas of Ionic Compounds
SOLUTION:
(a) Ba(C2H3O2)2 is called barium diacetate.
(b) Sodium sulfide has the formula (Na)2SO3.
(a) Barium is always a +2 ion and acetate is -1. The “di-” is unnecessary.
(b) An ion of a single element does not need parentheses. Sulfide is S2-, not SO32-. The correct formula is Na2S.
(c) Since sulfate has a 2- charge, only 1 Fe2+ is needed. The formula should be FeSO4.
(d) The parentheses are unnecessary. The correct formula is Cs2CO3.
(c) Iron(II) sulfate has the formula Fe2(SO4)3.
(d) Cesium carbonate has the formula Cs2(CO3).
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