Multiple Choice
What is the correct name for the compound P_2O_5?
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3. Chemical Reactions
Naming Ionic Compounds
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Which of the following is the correct chemical formula for potassium hydroxide?
A
K2O
B
(Pt)2O
C
KOH
D
PtOH
Verified step by step guidance1
Understand that potassium hydroxide is a compound made of potassium (K), oxygen (O), and hydrogen (H).
Recall that potassium (K) is an alkali metal that typically forms a +1 charge ion (K⁺).
Recognize that the hydroxide ion (OH⁻) is a polyatomic ion with a -1 charge.
Combine the potassium ion (K⁺) and hydroxide ion (OH⁻) in a 1:1 ratio to balance the charges, resulting in the formula $KOH$.
Verify that the other options either have incorrect element symbols or incorrect ratios that do not represent potassium hydroxide.
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