
(a)
Interpretation:
The formula and molecular mass of ammonium sulfate are to be determined.
Concept introduction:
The molecular formula of a compound is a representation which suggests the total number of atoms of each element the compound is made of.
The molecular mass of a compound is defined as the sum of the atomic masses of all the atoms present in it.
The general formula to calculate the molecular mass of a compound is,
(a)

Answer to Problem 2.102P
The molecular formula for ammonium sulfate is
Explanation of Solution
Ammonium and sulfate are polyatomic ions. The formula for the sulfate ion is
While naming compounds containing polyatomic ions, when two or more of the same polyatomic ion are present, the ion appears in parentheses. The total number of the polyatomic ion is written as a subscript outside the parentheses.
In ammonium sulfate, two ammonium polyatomic ions associate with one sulfate polyatomic ion. Hence the molecular formula becomes
The formula to calculate the molecular mass of
Substitute
The molecular formula for ammonium sulfate is
(b)
Interpretation:
The formula and molecular mass of sodium dihydrogen phosphate are to be determined
Concept introduction:
The molecular formula of a compound is a representation which suggests the total number of atoms of each element the compound is made of.
The molecular mass of a compound is defined as the sum of the atomic masses of all the atoms present in it.
The general formula to calculate the molecular mass of a compound is,
(b)

Answer to Problem 2.102P
The molecular formula for sodium dihydrogen phosphate is
Explanation of Solution
Phosphate is a polyatomic ion. The formula for the phosphate ion is
Sodium belongs to the
Hence the molecular formula for sodium dihydrogen phosphate becomes
The formula to calculate the molecular mass of
Substitute
The molecular formula for sodium dihydrogen phosphate is
(c)
Interpretation:
The formula and molecular mass of potassium bicarbonate are to be determined
Concept introduction:
The molecular formula of a compound is a representation which suggests the total number of atoms of each element the compound is made of.
The molecular mass of a compound is defined as the sum of the atomic masses of all the atoms present in it.
The general formula to calculate the molecular mass of a compound is,
(c)

Answer to Problem 2.102P
The molecular formula for potassium bicarbonate is
Explanation of Solution
Carbonate is a polyatomic ion. The formula for the carbonate ion is
Potassium belongs to the
Hence the molecular formula for potassium bicarbonate becomes
The formula to calculate the molecular mass of
Substitute
The molecular formula for potassium bicarbonate is
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Chapter 2 Solutions
Loose Leaf for Chemistry: The Molecular Nature of Matter and Change
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- Predict the major products of this organic reaction: OH NaBH4 H ? CH3OH Note: be sure you use dash and wedge bonds when necessary, for example to distinguish between major products with different stereochemistry. Click and drag to start drawing a structure. ☐ : Sarrow_forwardPredict the major products of this organic reaction: 1. LIAIHA 2. H₂O ? Note: be sure you use dash and wedge bonds when necessary, for example to distinguish between major products with different stereochemistry. Click and drag to start drawing a structure. X : ☐arrow_forwardFor each reaction below, decide if the first stable organic product that forms in solution will create a new C - C bond, and check the appropriate box. Next, for each reaction to which you answered "Yes" to in the table, draw this product in the drawing area below. Note for advanced students: for this problem, don't worry if you think this product will continue to react under the current conditions - just focus on the first stable product you expect to form in solution. NH2 tu ? ? OH Will the first product that forms in this reaction create a new CC bond? Yes No Will the first product that forms in this reaction create a new CC bond? Yes No C $ ©arrow_forward
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