answer the following post lab questions Questions 1-4. Post-Lab Q uestions: Answ

Question

answer the following post lab questions Questions 1-4. Post-Lab Q uestions: Answers must be in full sentences and typed.) 1. In this experiment you are to remove the water of hydration by heating. Why do you to heat it at least twice instead of heating the hydrate just once for a prolonged period of time? 2. If you neglected to heat the hydrate gently the first time and splattering occurs, how would it affect your percent of water of hydration? Be specific. Predict whether it would be too high or too low and explain your answer. J. A sudent,Jldln, rpodrate % water Water of Hydration (before rounding) Trial 1 36.5 % 4.02 Trial 2 362 % 4.03 r formula of his anhydride. What type of error would cause this? Explain fully. eed vals even without knowing the We know there is something wrong with his reported values even without knowing the 4. A student, Mary, used 1.2 g of hydrate in the first trial and 1.6 g in the second trial. plain fully why her mass percent of water will be the same for both trials even though she used more hydrate in the second trial. (Do not simply state that the mass percent is an intensive property Ex

Explanation / Answer

1) If you heat only once, plenty will remain as a hydrate (i.e. if the salt was to be XY*nH2O; only some part of n will go) The second heating will help to get rid of the last part of "n"

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