Which one of the following is not true concerning 2.00 L of 0.100 M solution of Ca₃(PO₄)₂? A)This solution contains 0.200 mol of Ca₃(PO₄)₂. B)This solution contains 0.800 mol of oxygen atoms. C)1.00 L of this solution is required to furnish 0.300 mol of Ca²⁺ ions. D)There are 6.02 × 10²² phosphorus atoms in 500.0 mL of this solution. E)This solution contains 6.67 × 10^-2 mol of Ca²⁺.

Question

Quizplus · Accepted Answer

To calculate the number of oxygen atoms in 2.00 L of 0.100 M CaSO4 solution, we first need to calculate the number of moles of CaSO4 present:
0.100 M = 0.100 mol/L
Number of moles of CaSO4 in 2.00 L = 0.100 mol/L × 2.00 L = 0.200 mol
Now, CaSO4 contains one Ca2+ ion, one S2- ion, and four O2- ions. Therefore, number of oxygen atoms = 4 × 0.200 mol = 0.800 mol.
So, statement B is false because 0.800 mol of oxygen atoms are present, not 0.200 mol.

Which One of the Following Is Not True Concerning 2