Textbook Question
Write the formula for each acid. a. phosphoric acid b. hydrocyanic acid c. chlorous acid
1
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3. Chemical Reactions
Naming Acids
Multiple Choice
The formula for the oxalate ion is C2O4^2-. What is the correct formula for oxalic acid?
A
HC2O4
B
H2SO4
C
H2C2O4
D
H2CO3
Verified step by step guidance1
Identify the oxalate ion formula, which is \( \text{C}_2\text{O}_4^{2-} \). This ion carries a 2- charge.
Recognize that oxalic acid is the acid form of the oxalate ion, meaning it will have hydrogen ions (H+) added to neutralize the charge.
To neutralize the 2- charge of the oxalate ion, add two hydrogen ions (H+), resulting in the formula \( \text{H}_2\text{C}_2\text{O}_4 \).
Understand that adding two hydrogen ions to the oxalate ion forms oxalic acid, which is a neutral compound.
Verify the chemical formula for oxalic acid: \( \text{H}_2\text{C}_2\text{O}_4 \), ensuring it is electrically neutral and consistent with the addition of hydrogen ions to the oxalate ion.
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