Multiple Choice
Which of the following is the correct chemical formula for diphosphorus pentasulfide?
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3. Chemical Reactions
Naming Molecular Compounds
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Which of the following compounds is classified as a hydrofluorocarbon (HFC)?
A
CH2F2
B
CBrF3
C
CCl2F2
D
CF4
Verified step by step guidance1
Step 1: Understand the definition of a hydrofluorocarbon (HFC). HFCs are compounds that contain hydrogen (H), fluorine (F), and carbon (C) atoms, but do not contain chlorine (Cl) or bromine (Br).
Step 2: Examine each compound's formula to identify the elements present:
- CH2F2 contains carbon, hydrogen, and fluorine.
- CBrF3 contains carbon, bromine, and fluorine (no hydrogen).
- CCl2F2 contains carbon, chlorine, and fluorine (no hydrogen).
- CF4 contains carbon and fluorine only (no hydrogen).
Step 3: Apply the HFC criteria: the compound must have hydrogen, fluorine, and carbon, but no chlorine or bromine.
Step 4: Identify which compound fits the criteria. Only CH2F2 contains hydrogen, fluorine, and carbon without chlorine or bromine.
Step 5: Conclude that CH2F2 is classified as a hydrofluorocarbon (HFC).
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