Chapter 32

When one mole of \(\mathrm{Na}_{2} \mathrm{SO}_{4}\) is dissolved in water: a) how many moles of sodium ions are found in the solution? b) how many moles of sulfate ions are found in the solution?

Verify that when \(10.0 \mathrm{~g}\) of sodium sulfate dissolves in water: a) there are \(7.04 \times 10^{-2}\) moles of sodium sulfate in the water. b) there are \(7.04 \times 10^{-2}\) moles of sulfate in the water. c) there are \(14.1 \times 10^{-2}\) moles of sodium in the water.

Which is more concentrated with respect to sodium ions, \(50.0 \mathrm{~g}\) of \(\mathrm{NaCl}\) in \(500.0\) \(\mathrm{mL}\) of solution or \(59.0 \mathrm{~g}\) of \(\mathrm{Na}_{2} \mathrm{SO}_{4}\) in \(500.0 \mathrm{~mL}\) of solution?

Which is more concentrated with respect to sodium ions, \(0.50 \mathrm{M} \mathrm{NaCl}\) or \(0.30 \mathrm{M}\) \(\mathrm{Na}_{2} \mathrm{SO}_{4} ?\)

Verify that when \(5.26 \mathrm{~g}\) of glucose, \(\mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6}\), dissolves in water: a) there are \(2.92 \times 10^{-2}\) moles of glucose in the water. b) there are \(1.76 \times 10^{22}\) molecules of glucose in the water.