A crystalline material containing 30 grams of barium chloride crystals was placed into an oven at 400 degrees c and heated for two hours. It was then cooled and weighed. the new mass was less than before it was heated, containing 20 grams if barium chloride. How is this possible?
3 answers
The barium chloride must have been a hydrate and the water was driven out of it OR the barium chloride was wet to begin with. I'm sure the first is the answer you want and the person who made up the problem didn't think about the second possibility.
Copper 2 sulfate is a hydrated crystal with a deep blue color. When it is heated the crystals crumble and turn white. Why and how can you return the blue color?
The crystal that contain attached water molecules. while heating, barium chloride produce the water molecules and the water molecules contain the weight and absorb some weight of barium chloride
0 answers