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Observations Before Experiment Barium Hydroxide BaOH2 8H2O -The barium hydroxide appeared to have a slight tint of blue giving it the appearance of an off white substance -The substance needed to be crushed or grinded down into finer pieces to allow for better reaction with the ammonium thyocyanate NH4SCN -Therefore a mortar and pestle was used to grind down the barium hydroxide into finer pieces -When the substance came in contact with the skin a slightly wet residue could be felt Ammonium Thyocyanate NH4SCN -When attempting to extract the compound from the bottle one could notice that it was once a fine granular substance however it had all hardened and become one compacted solid -Therefore using a knife or chisel like object only chunks could be extracted from the bottle Once these chunks were extracted from the bottle they were grinded up using a mortar and pestle into finer granules that would react much more efficiently with the barium hydroxide -This compound appeared to have a pink tint to it again giving it that off white appearance -Due to the fact that a product of this chemical is in many cases ammonia NH3 it did have a slight yet pungent odour In General -The initial temperature of the water in the calorimeter is 215 degrees Celsius -4687 grams of water present in the calorimeter -Amount of Ammonium Thyocyanate available for reaction 403 grams -Amount of Barium Hydroxide available for reaction 1004 grams During Experiment In General -The initial temperature of the water in the calorimeter was close to 21 Degrees Celsius -After the ammonium thyocyanate was added an almost instant drop in the temperature of the water The final temperature of the water ended up being around 115 degrees Celsius This represented a change in temperature of about 105 degrees Celsius -Note A constant shaking
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