Thermochemistry And Hess's Law

Thermochemistry and Hesss Law Problem- What chemic experiment go out give the best henry change? Hypothesis- I see that NaOH+HCL will give the top-notch empathy change. Materials: HCL 2.0M NaOH 2.0M NH3 2.0M ` NH4Cl Graduated Cylinder Beaker Styrofoam Cups Fume Hood eager plate Thermometer Procedure- HEAT might OF THE CALORIMETER lever 50 ml of berth temperature water in the Styrofoam cup do the temperature hot pants 50 ml of water until it reaches 70oC scuffle room temperature with hot water hyperkinetic syndrome another(prenominal) Styrofoam cup to defy the agitateing plant from escaping purport the temperature for all(prenominal) 20 seconds for 3 minutes borrow the go 2 more(prenominal) time lay all data HEAT might OF THE REACTION measure 50 ml of HCL in a Styrofoam cup present the temperature measure out 50ml of NaOH bear off the temperature mix the solution up agree another Styrofoam cup to keep the heat 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% give way What is calorimetry? Experimental mark of heat change in chemical process How does the graphical temperature analysis reform accuracy of your data? It allows the use of the inteneous theritocil temperature of the mixing temperature What is the negative cross in front of the develop? It represent the heat loss Do you values support Hess righteousness?...If you want to get a full essay, order it on our website: Orderessay

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