Multiple Choice
Which statement explains why NaBr is classified as a compound?
3. Chemical Reactions
Naming Ionic Compounds
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Which of the following is the correct name for the compound KBrO_3?
A
Potassium bromide
B
Potassium bromate
C
Potassium bromite
D
Potassium tribromide
Verified step by step guidance1
Identify the cation and anion in the compound KBrO_3. Here, K is potassium (a metal cation), and BrO_3 is the polyatomic ion containing bromine and oxygen.
Recognize that BrO_3 is a polyatomic ion known as bromate. The suffix '-ate' indicates the ion with a higher number of oxygen atoms compared to '-ite'.
Recall the naming convention for ionic compounds: the cation name (potassium) is followed by the anion name (bromate) without changing the cation name.
Eliminate incorrect options: 'Potassium bromide' refers to KBr (no oxygen), 'Potassium bromite' refers to KBrO_2 (one less oxygen), and 'Potassium tribromide' would imply multiple bromine atoms bonded, which is not the case here.
Conclude that the correct name for KBrO_3 is 'Potassium bromate' based on the cation and the polyatomic ion present.
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