1 litre of an aqueous solution of sodium chloride contains 117g of dissolved salt . calculate the no of moles

1 litre of an aqueous solution of sodium chloride contains 117g of dis

1.	1 litre of an aqueous solution of sodium chloride contains 117g of dissolved salt . calculate the no of moles
Answer» Use the number of moles of sodium PER mole of sodium sulfate.Explanation:Sodium sulfate is Na2SO4First, CALCULATE the moles of sodium sulfate you have in a 14.2g sample.Find the molar mass of sodium sulfatemolar mass = atomic mass in grams2(23) + 32 + 4(16) = 142 GRAMS per moleDivide the mass of the sample by the molar mass to obtain moles 14.2g142gmol−1 = 0.1 molNow, for every 1 mol of NA2SO4 you have 2 moles of Na+ ions. MULTIPLE the moles of Na2SO4 that you found just then by 2 to obtain the moles of sodium ions.Use Avogadro's number (6.022 x 1023) to find the number of ions present. (Recall that Avogrado's number is the number of particles per mole of a substance).6.022 x 1023 x 0.2 mol = 1.2044 x 1023 ions