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Discipline: Chemistry

Question topic: Solutions and Mixtures

Source: Originais Teachy

Level of difficulty: Medium

(Originais Teachy 2023) - Question Medium of Chemistry

During an experiment in the chemistry laboratory, you were tasked with producing a sulfuric acid (H2SO4) solution with a concentration of 0.2 mol/L from a concentrated solution of 1 mol/L. For this, you have a beaker, a pipette, and a graduated cylinder. Considering the provided materials and the need for dilution: a) Calculate the volume of the concentrated acid solution that should be used to obtain 500 mL of the 0.2 mol/L solution; b) Explain, step by step, how you would proceed in the laboratory to perform the dilution; c) Suppose you made an error when measuring the volume of the concentrated solution, using 10% more than the correct amount in the preparation of the solution. Calculate the new concentration of the resulting solution.


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