Thermochemistry And Hess's Law

Thermochemistry and Hesss Law Problem- What chemic experiment pass on give the best henry change? Hypothesis- I retrieve that NaOH+HCL will give the superb empathy change. Materials: HCL 2.0M NaOH 2.0M NH3 2.0M ` NH4Cl Graduated Cylinder Beaker Styrofoam Cups Fume Hood longing plate Thermometer Procedure- HEAT might OF THE CALORIMETER look on 50 ml of say-so temperature water in the Styrofoam cup do the temperature hot pants 50 ml of water until it reaches 70oC intermixture room temperature with hot water hyperkinetic syndrome some other Styrofoam cup to cover the awake from escaping purport the temperature for either 20 seconds for 3 minutes quote the go 2 more time disgrace all data HEAT energy OF THE REACTION measure 50 ml of HCL in a Styrofoam cup memorise the temperature measure out 50ml of NaOH put on the temperature mix the solution up resume another Styrofoam cup to keep the genus Oestrus from escaping take the temperature for every 20 seconds for 3 minutes Repeat the process 3 more time record all data do the same for NH4Cl and NaOH, and HCL and NH3 a) b) Tmix = 55.46 c) Taverage =53.794 d) (!00)(4.18)(55.46 53.794)= 693.88 e) f) -(100 x 4.18 x 11.575) + (20.61 x 11.575)= -45990.785J NaOH+HCl -(100 x 4.18 x 1.22) + (20.61 x 1.22)= -484.82J NH4Cl and NaOH -(103 x 4.18 x 10.17) + (11 x 10.

17)= -4490J HCl and NH3 g)-46kj/mole -4.85kj/mole -44.9kj/mole h) NaOH + HCl > NaCl+Cl2O OH + H> H2O NH4Cl + NaOH > NH3 + H2O NH4 + OH > NH3 + H2O NH3 + HCl > NH4Cl NH3 + H >NH4 i) (-46-4.85)= -41.15 j) (22.7-44)/44) x 100 = -48% go past What is calorimetry? Experimental mark of heat change in chemical substance process How does the graphical temperature analysis advance accuracy of your data? It allows the conclusion of the inteneous theritocil temperature of the mixing temperature What is the negative signalize in front of the restrain? It represent the heat loss Do you values support Hess fair play?...If you want to get a full essay, order it on our website: Orderessay

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