Question

Which of the following solutions has the highest concentration of Na₁+?

a) 0.200 M NaNO₃
b) 0.080 M Na₂CO₃
c) 0.080 M Na₃PO
d) 0.100 M Na₂SO₄

Answer 1

Solution a) with 0.200 M NaNO3 has the highest concentration of Na1+.

Step-by-step explanation:

To determine which solution has the highest concentration of Na1+, we can look at the moles of Na1+ in each solution. In this case, we can use the formula: Molarity (M) = moles of solute / liters of solution. By rearranging this formula, we can solve for moles of solute: Moles of solute = Molarity * liters of solution.

• a) 0.200 M NaNO3: Moles of Na1+ = 0.200 M x 0.2 L = 0.040 moles
• b) 0.080 M Na2CO3: Moles of Na1+ = 0.080 M x 0.2 L = 0.016 moles
• c) 0.080 M Na3PO: Moles of Na1+ = 0.080 M x 0.2 L = 0.016 moles
• d) 0.100 M Na2SO4: Moles of Na1+ = 0.100 M x 0.2 L = 0.020 moles

Therefore, solution a) has the highest concentration of Na1+, with 0.040 moles of Na1+.