Question

1. How would you determine if you have heated the sample long enough to drive off all the water from the hydrate? 2. A compound is made of 30.9% of Cu, 13.6 % Si, and 55.5% F. a. What is the empirical formula of the anhydrous salt? b. 1.00 gram of this compound is subject to high moisture environment. The resulting hydrate weighs 1.53 grams. What is the formula of the hydrate?

Answer 1

DATE 20 PAGE No Mhn a hydall healed sbuuclwa Mamy Jydrates ge lange, ull foumed the yalal the Ompaund uull chang! They may shalter dnd form walis of hydraluen The coleur of cehopaund chamge is dhinen the also Moles- HH 30-9/ 63.546-0-486 18-6 2808- 0484 555/18 44 Relative meley 048410-484 6 484/0484- 2-92/ 0 484 - 30 41 13-6% Si 55 5 2-92 9 ef empaurdu aubyict te high muitur Snitial Neigh Total ight 153 0589 hx.63-S48 0X 28 08) +CKIR 99) 205.566 Aount Man of au Si f 2o 5 566 205 5 66 X 108-94 0S 39 0-53 108-94 18 Ca Sif 6H20 no of H20 formula of hydrai