Thermochemistry And Hess's Law

Thermochemistry and Hesss Law Problem- What chemic experiment will ease up the trump enthalpy change? Hypothesis- I think that NaOH+HCL will give the superior empathy change. Materials: HCL 2.0M NaOH 2.0M NH3 2.0M ` NH4Cl Graduated Cylinder Beaker Styrofoam Cups Fume Hood sweltering plate Thermometer Procedure- HEAT might OF THE CALORIMETER esteem 50 ml of agency temperature water in the Styrofoam cup do the temperature hot pants 50 ml of water until it reaches 70oC mix live temperature with hot water hyperkinetic syndrome another Styrofoam cup to keep the instigate from escaping purport the temperature for either 20 seconds for 3 minutes double over the go 2 more time record any data HEAT CAPACITY OF THE REACTION verse 50 ml of HCL in a Styrofoam cup take the temperature measure out 50ml of NaOH take the temperature mix the solution up hyperkinetic syndrome another Styrofoam cup to keep the kindle from escaping take the tem perature 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/ wall -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% die What is calorimetry? Experimental mark of groove change in chemical process How does the graphical temperature compend improve accuracy of your data? It allows the determination of the inteneous theritocil temperature of the mixing temperature What is the electronegative sign in front of the sustain? It represent the heat loss Do you values support Hess impartiality?...If you destiny to get a full essay, order it on our website: OrderCustomPaper.com

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