6.) A student collected the following data during an experiment t empty crucible

Question

6.) A student collected the following data during an experiment t empty crucible had a mass of was added to the crucible and weighed. The mass of the crucible and hydrate was crucible and contents was heatee determine the formula of a ydrate. The of a hydrate of CSO ms when heated to constant mass a.) What was the mass of the sample? 48.0659 grams. 49.A5s0 gram The 9.45504 3.05gma of the sample b.) What was the mass of water lost? 4.4550g 9-01, 534 c.) What was the mass of the anhydrate after heating? d.) What is the formula of the hydrate? aou are tere in 6.00 ml of 2.00 M NaOH? 200 ol

Explanation / Answer

c) mass of anhydrate after heating = 48.0659 - 45.6050 = 2.4609 g

d) mass of water lost = 3.85 - 2.4609 = 1.3891 g

no of mol of water lost = 1.3891/18 = 0.0771 mol

   no of mol of anhydrate = 2.4609/159.6 = 0.0154 mol

simplest ratio

CuSO4 = 0.0154/0.0154 = 1

H2O= 0.0771/0.0154 = 5

FORMULA OF HYDRATE = CuSo4*5H2O

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