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Multiple Choice
Which of the following is the correct chemical formula for copper(I) hydroxide?
A
CuO
B
Cu_2O
C
Cu(OH)_2
D
CuOH
Verified step by step guidance
1
Step 1: Identify the oxidation state of copper in copper(I) hydroxide. The Roman numeral I indicates that copper has a +1 charge in this compound.
Step 2: Recall the hydroxide ion, which is OH⁻, carries a -1 charge.
Step 3: To form a neutral compound, the total positive charge must balance the total negative charge. Since copper is +1 and hydroxide is -1, they combine in a 1:1 ratio.
Step 4: Write the chemical formula by combining one Cu⁺ ion with one OH⁻ ion, resulting in CuOH.
Step 5: Verify the options given: CuO is copper(II) oxide, Cu₂O is copper(I) oxide, Cu(OH)₂ is copper(II) hydroxide, so the correct formula for copper(I) hydroxide is CuOH.