can u help me form an open ended investigation around molar heat, it has to be of year 11 level. and be easy enough to perform at home....
2007-05-23 14:30:29 · 2 answers · asked by -_^ PK ^_- 1 in Science & Mathematics ➔ Chemistry
Dissolving substances in water will be either exothermic (give off heat) or endothermic (absorb heat) from the surroundings.
Get some ice melt from the hardware store or supermarket. It is CaCl2. Measure how many grams and dissolve it in a measured mass of water. Use a thermometer to measure the temperature change.
Calculate the heat gained by the water using
q =mCp delta T. The Cp of water is 1 cal/g oC
Convert the grams of CaCl2 to moles. Divide the calories above by the moles of CaCl2 and you have the molar heat of solution
2007-05-23 14:36:11 · answer #1 · answered by reb1240 7 · 0⤊ 0⤋
http://www.chemtutor.com
2007-05-23 14:33:04 · answer #2 · answered by Anonymous · 0⤊ 1⤋