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Tutorial 4 SOLUTION STOICHIOMETRY - EIU

T-27 Tutorial 4 SOLUTION STOICHIOMETRYS olution STOICHIOMETRY calculations involve chemical reactions taking place in the various methods of expressing SOLUTION concentration the most convenient for generallaboratory use is molarity, which is defined: Moles of solute nsoluteMolarity = or M = Liters of SOLUTION LsolnChemical reactions are written in terms of moles of reactants and products; this molarityconcentration unit relates moles of solute to volume of SOLUTION . Thus, easily measured solutionvolumes provide a simple method of measuring moles of : What is the molarity of a SOLUTION made by dissolving g of potassium chloridein enough water to make mL of SOLUTION ?This data gives a relationship between amount of solute and volume of SOLUTION : g KCl mL.

23) 25.00 mL of a phosphoric acid solution required 27.55 mL of a 0.155 M potassium hydroxide solution for neutralization. What is the molarity of the acid? 24) 25.00 mL of a 0.0525 M calcium hydroxide solution is titrated with 0.111 M hydrochloric acid solution. What volume of acid is needed for complete neutralization?

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