Multiple Choice
What is the correct chemical name for the compound NH4SCN?
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3. Chemical Reactions
Naming Ionic Compounds
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Which of the following is the correct chemical formula for table salt?
A
Na2SO4
B
NaCl
C
KCl
D
CaCl2
Verified step by step guidance1
Understand that table salt is the common name for sodium chloride, which is composed of sodium (Na) and chlorine (Cl) ions.
Recall that sodium typically forms a +1 charge (Na⁺) and chloride forms a -1 charge (Cl⁻), so they combine in a 1:1 ratio to form a neutral compound.
Write the chemical formula by combining one sodium ion and one chloride ion, resulting in NaCl.
Compare the given options to identify which formula matches sodium chloride: Na2SO4 (sodium sulfate), NaCl (sodium chloride), KCl (potassium chloride), and CaCl2 (calcium chloride).
Conclude that the correct chemical formula for table salt is NaCl.
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