Multiple Choice
What is the concentration of K⁺ ions in a 0.025 M K₂CO₃ solution assuming complete dissociation?
6. Chemical Quantities & Aqueous Reactions
Molarity
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What is the molar concentration of sodium ions in a 0.350 M Na3PO4 solution?
A
1.40 M
B
1.05 M
C
0.350 M
D
0.700 M
Verified step by step guidance1
Identify the chemical formula of the compound: Na3PO4.
Determine the number of sodium ions (Na+) produced per formula unit of Na3PO4. Since there are three sodium atoms in Na3PO4, it dissociates into three Na+ ions.
Understand that the molar concentration of the compound (Na3PO4) is given as 0.350 M.
Calculate the molar concentration of sodium ions by multiplying the molar concentration of Na3PO4 by the number of sodium ions produced per formula unit: \( \text{Molarity of Na+} = 0.350 \, \text{M} \times 3 \).
Conclude that the molar concentration of sodium ions in the solution is the result of the above calculation.
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