When 0.243 g of Mg metal is combined with enough HCl tomake 100 mL of solution in a constant-pressure calorimeter,the following reaction occurs:Mg1s2 + 2 HCl1aq2¡MgCl21aq2 + H21g2If the temperature of the solution increases from 23.0 to34.1 °C as a result of this reaction, calculate ΔH in kJ>mol Mg.Assume that the solution has a specific heat of 4.18 J>g@°C anda density of 1.00 g/mL. (a) -19.1 kJ>mol (b) -111 kJ>mol(c) -191 kJ>mol (d) -464 kJ>mol (e) -961 kJ>mol

Review | Constants | PeriIodic Table The standard heat of formation, Ar H°, is defined as the enthalpy change for the formation of one mole of substance from its constituent elements in their standard states. Thus, elements in their standard states have AfH® =0. Heat of formation values can be used to calculate the enthalpy change of any reaction. Part A For which of the following reactions is A,H° equal to Ar H° of the product(s)? Consider, for example, the reaction You do not need to look up any values to answer this question. 2NO(g) + O2(9) = 2NO2(9) Check all that apply. with heat of formation values given by the following table: • View Available Hint(s) Substance (kJ mol-1) NO(9) O C(s) + 02 (9)→CO2(9) 90.2 O2 (9) O Li(s) + F2(1)→LIF(s) NO2(9) 33.2 O Li(s) + F2(9)→LİF(s) O 2Li(s) +F2(9)→2LİF(s) Then the heat of formation for the overall reaction is A,H°= EnpAf H° (products)- nA¢H° (reactants) O CO(g) + ÷O2(9)→CO2(9) 2(33.2) [2(90.2) + 0] -114 kJ mol-1 O BaCO3(s)→BA0(s) + CO2(9)…

Liquid gas undergoes combustion in air, releasing 100kf of heat and producing two gaseous products. Include energy in the reaction. When HCL reacts with NaOH to produce NaCl and H2O, 60kj of heat is released in the surroundings. a. State whether the surrounding gets warmer or colder. b. Sketch a PE graph for this reaction.

Isopropanol, with 13 wt% water, can be dehydrated to obtain almost pure isopropanol at a 90% recovery by azeotropic distillation with benzene. When condensed, the overhead vapor from the col- umn forms two immiscible liquid phases. Use Table 2.4 with data in Perry's Handbook and the data below to compute the heat-transfer rate in Btu/h and kJ/h for the condenser. Water-Rich Organic-Rich Overhead Phase Phase Phase Vapor Liquid Liquid Temperature, °C 76 40 40 Pressure, bar 1.4 1.4 1.4 Flow rate, kg/h: Isopropanol 6,800 5,870 930 Water 2,350 1,790 560 Benzene 24,600 30 24,570