Question

Data Collection Table for Part C (This information needs to be in your lab notebook before you come to lab. You will fill in the data directly into your notebook as you complete the lab.) 24.2 23.7 30.4 6.45 Initial Temp. of HCI Initial Temp. of NaOH Final Temp. of Mixture AT solution solution qreaction Number of moles of water formed AHrxn (reaction / moles water) (units: kJ/mol) Calculate AT solution, (average the initial temperatures of HCl and NaOH as the initial temperature), qsolution (assume all the heat is absorbed by 104 g of soln and Sp.Ht. of Aqueous Solutions = 4.184 J/g °C), qreaction, the moles of water formed by the reaction and AHr (in kJ per mole of H2O formed by the reaction). The literature value for the heats of reaction between HCl and NaOH for comparison to your experimental values are listed below. H20 Literature Values: CaCl2 (s) * Ca²+(aq) + 2 C1 "(aq) AHxxn =-81.3 kJ/mol NH4NO3 (9) 129 NH4+(aq) + NO3 "(aq) AHxn = 25.7 kJ/mol

Answer 1

this margin V soon , m cp. AT 7; = 24.2 +237 - 23.95C Tf ? 30.4°C C = 4184 g g-°C AT Tf -Ti = + 6.45°C m = 104 g it Vsol = 1048 x 4.184 I x 6.45€ | Psol = 2806.63 g (2806.63) aren = – 2806.63 g an Ha + NaOH - Nocl + H₂O. 104g of soll & 100 ml of sol s some of HU & 52 ml of Nadh Molarity - 1 So, fill moles - 50 ml x 1 mole 1000 anh = 0.050 ndes So, H₂O moles = 0.050 moles Aty = -2806.637 - 56.132 kg) o osp notes mol