Decomposition of Bleach Essay Example for Free

decay of bleaching agent EssayIn this experiment, the prescribe of decomposition is calculated by measuring the volume of the intersection gas using water displacement. The reactant used is household bleach, which contains 5 to 6% of NaClO. The decomposition can be stated in this following equation2 ClO- (aq) 2 Cl- (aq) + O2 (g)To measure the swan of decomposition, a gas is needed to fasten the reaction. A suitable catalyst is Co2O3, which is produced from mixing Co(NO3)2 and bleach. The reaction can be depict as follows2 Co2+ (aq) + ClO- (aq) + 2H2O (l) Co2O3 (s) + 4 H+(aq) + Cl-(aq)PurposeThe objective of this experiment is to determine the rate of decomposition of bleach by measurement of gas production at several different temperatures. theoryThe decomposition rate leave alone increase if the surrounding temperature increases. If the surrounding temperature increases by 10C, the reaction rate will double. If the temperature decreases by 10C, then the reaction rate wi ll decrease by half.Materials* Household Bleach* Co(NO3)2 answer* Erlenmeyer flask* Stopper and tube* Ring stand* Burette* Graduated cylinder* Thermometer* Burette secureProcedureRefer to lab instruction sheet Decomposition of BleachData sidestep 1 Accumulation of Oxygen at Room Temperature (24C)Time separation (s) multitude of shove along (mL)Time Interval (s)Volume of Gas (mL)303.521029.9609.124034.39013.427038.312018.030042.0cl20.833044.5 clxxx25.936050.1Table 2 Accumulation of Oxygen at 10C above Room Temperature (34C)Time Interval (s)Volume of Gas (mL)Time Interval (s)Volume of Gas (mL)308.118037.56013.921041.39020.424045.412026.027049.415031.8Table 3 Accumulation of Oxygen at 10C below Room Temperature (14C)Time Interval (s)Volume of Gas (mL)Time Interval (s)Volume of Gas (mL)60090027.2120096029.51800102031.92401.8108033.53004.0114036.03606.5120038.04208.9126040.554011.8132042.160013.2138044.166015.6144045.672018.1150047.578021.0156049.684023.0157950.0AnalysisCalculati onsReaction Rate =Reaction rate at room temperature = = 0.14 mL O2 / sReaction rate at 10C above room temperature = = 0.17 mL O2 / sReaction rate at 10C below room temperature = = 0.036 mL O2 / sTable 4 Rate of Decomposition of BleachSurrounding Temperature (C)Reaction Rate (mL/ s)