IB Chemistry: Grade 12: Practical 1: Stoichiometry Quantitative Preparation of a Salt and Yield Calculation

Quantitative preparation of a salt and yield deliberation Introduction:          shit (II) sulfate female genital organ be prepared by reacting copper (II) oxide with subjugate sulfuric acid. The resulting copper (II) sulfate source can wherefore be crystallized, so that a quantitative analysis may be made of the harvest formed. This can then be compared with the divinatory nub, and % yield calculated. Copper (II) sulphate crystals are CuSO4.5H2O. Therefore, the reception is:                  CuO + H2SO4 + 4H2O ® CuSO4.5H2O                  0.2 mol. 0.2 mol. 0.2 mol. Hypothesis:         According to theory, the keep win of copper sulphate produced should be 159.61g. However, I believe the amount produced will be far from this. This is because the theoretical amount can never be produced exactly, even low laboratory conditions. instrument: speed of lightml measuring cylinder (± 0.05 cm) atomic number 6ml 2M trim down sulphuric acid 250ml beaker (x2) (± 0.05 cm) Bunsen burner Copper (II) oxide move Filter papers Scale (± 0.0005 g) Clamp stand system: A measuring cylinder was taken, and used to measure 100ml of 2M deprave sulphuric acid. The acid was transferred to a 250ml beaker, and warmed with the Bunsen burner notwithstanding not allowed to boil. Copper (II) oxide was added until in excess. The source was filtered while til now hot, and the symmetricalness was washed off. The resulting copper (II) sulphate solution was poached until it had been cut back by approximately 50%. The solution was then allowed to crystallize. Once crystallized, the solution was filtered to separate the crystals. The crystals were dried mingled with fresh filter paper. The crystals were weighed on the scale. Results:         Amount of copper (II) oxide from examine         Theoretical weight/g                   !         49.94          unfeigned weight/g (± 0.0005 g)                  38.38 Yield: (38.38 / 49.94) x 100 = 76.85% % uncertainty = 0.0005 x 100 = 1.303 x 10^-5%                   38.38... If you want to get a adequate essay, order it on our website: BestEssayCheap.com

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