CHEM 1000 Lecture Notes - Silver Chloride, Joule, Heat Capacity

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pearrabbit208

23 Aug 2012

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Aqueous silver ion reacts with aqueous chloride ion to yield a white precipitate of silver chloride. In such cases m = 20. 0 ml x 1 g/ml = 20 g. Heat evolved / mole agcl = 6. 4 x102 j / (1. 00 x 10-2 mol agcl) = -64 kj/ mol agcl. *either mention heat is evolved or put the negative sign: oxyac welding torches burn acetylene gas c2h2o. calculate h in kj for combustion reaction of acetylene to yield co2 and h2o. 2c2h2 (g) + 5o2 (g) 4co2 (g) +2h2o(g) = [4mol x -393. 5 kj /mol + 2mol x -241. 8 kj/mol]-[2mol + 227. 4 kj/mol] 0 o2: a reaction inside a cylindrical container with a moveable piston causes volume change from 12. 0l to 18. 0l while the pressure on outside the container remain constant at 0. 975 atm. V = 18. 0 l 12. 0 l = 6. 0l. = 593 j (we say evolved so positive)

Related Questions

When is added to at in a calorimeter, the temperature of the aqueous solution increases to . Assuming that the specific heat of the solution is , that its density is , and that the calorimeter itself absorbs a negligible amount of heat, calculate the amount of heat absorbed for the reaction.