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Lab 9 Heat of Reaction OBJECTIVE: To experimentally determine the heat of reaction for two exothermic...
1 mol 1. Using dimensional analysis, calculate the number of moles of NaOH (nou) used in reaction #1 (show your work): NaOH (mol) = mnao (9) Where non is MM NaOH (9) the number of moles NaOH, mNaOH is the mass of sodium hydroxide used, and MMNOH is the molar mass of sodium hydroxide. 2. Using the density of water (d != 1.000.), calculate the mass of the 50.0 g water used in reaction #1 using: mwater = Vwater X...
Lab 14 Heat of Reaction Objective: To experimentally determine the heat of reaction for two exothermic reactions. Consider the following equations. (1) Mg(s) + 2HCI → MgCl2(aq) + H2(g) Hz(8) AH = ? (2) MgO(s) + 2HCl(aq) → MgCl(aq) + HOH (1) AH2 = ? The reactions represented by equations (1) and (2) will be our experimental work for today. Background: The heat given off or gained in a reaction is commonly called the heat of reaction. A reaction that...
HEAT OF REACTION: REPORT PAGES Partner's name: Name: Reaction (2) (MgO) Reaction (1) (Mg) DATA TABLE 0.51g 100 ml 22.49C 100g 1. Mass of the sample, g 100mL 2. Volume of the solution, (Vw), mL 22.20C 3. Initial Temperature (T), °C 29.2 °C 4३.९० 43.8-22,4 21.40 4. Final Temperature (T), °C 21.2-22.2-7C 5. Change of temperature, C AT Tr- T PROCESSING DATA/CALCULATIONS: Reaction 1 1. Using dimensional analysis, calculate the number of moles of Mg(nM) used in the reaction (show...
In this experiment, you will determine and compare the quantity of heat energy released in three exothermic chemical reactions through application of Hess’s law. Reaction 1: NaOH(s) → Na+(aq) + OH-(aq) + x1 kJ Reaction 2: NaOH(s) + HCl(aq) → H2O(l) + Na+(aq) + OH-(aq) + x2 kJ Reaction 3: NaOH(aq) + HCl(aq) → H2O(l) + Na+(aq) + OH-(aq) + x3 kJ In order to accurately measure the heat released in each reaction, we will be using a calorimeter. As...
please answer these questions are based off the sheet with the short procedure Question 1 What are the two substances and their quantities (mass for solids, volumes and concentrations for solutions) placed in the calorimeter for Reaction A? Concentration (if Formula Amount (include units!) needed; write N/A for pure substances) Substance 1 Substance 2 D Question 2 What are the two substances and their quantities (mass for solids, volumes and concentrations for solutions) placed in the calorimeter for Reaction B?...
need help with calculations V. Heat of reaction for NaOH (s) + HCI (aq) → Naci (aq) + H20 ()-dH(net) Direct determination Mass NaOH Moles NaOH = moles Mass of HCI solution Final temp. of solution Initial temp. of solution AT solution 30 23 C 4 C AH(net)(Direct) per mole NaOH Calculation Indirect determination Heat of dissolution of NaOH (s) [AH(diss)] Mass NaOH Moles NaOH moles Mass of water Final temp. of solution Initial temp. of solution AT solution AH(diss)-...
Calculate the amount of heat energy, q, produced in each reaction. Use 1.03 g/mL for thedensity of all solutions. Use the specific heat of water, 4.18 J/(g•°C), for all solutions. The temperature change in part 3 was 15.5 degrees celsius. Temperature change in part 4 was -1.2 degrees celsius. Then determine the enthalpy change for each reaction in terms of kJ/mol of each reactant. The molarity of NaOH is 2.0 M. Part III Conduct the Reaction Between Solutions of NaOH...
HEAT OF REACTION : REPORT PAGES Name: Partner's name: Reaction (1) (Mg) Reaction (2) (Mgo) DATA TABLE 1. Mass of the sample, g 0 510 1.000 2. Volume of the solution, (vw), mL 3. Initial Temperature (T), °C 100mL 22.4°C 43.8°C 43.8 -22.4 21.40 100mL 22.2°C 29. 2°C 4. Final Temperature (Te), °C 5. Change of temperature, C AT =Tr-T |29.2-22.2=76° 2. Assuming that the density of the solution is the same as the density g/mL), calculate the mass of...
C. ΔH for Reaction of HCl(aq) and NaOH(s): Volume of HCl: .05 L Volume of water: .05 L Volume total: .1 L Molarity of HCl: 2.08 M Mass of NaOH: 3.93 g ΔT for reaction C: 19°C 1. Calculate the number of moles of NaOH 2. Using NaOH as the limiting reagent, calculate the molarity of the resulting sodium chloride solution. 3. Calculate the value (calories) for the heat of reaction. 4. Calculate the ΔH for this reaction. 5. Is...
Calorimetry 1. Consider the following data: 4.99 g g 50 g 24 C 38.7 °C 111.1 g/mol Mass of CaCl Mass of Water Intial Temperature Final Temeprature Molar Mass of CaCl2 (a) Calculate the heat of solution. (AH) Assume that the specific heat of the solution is the same as water, 4.184 J/g- C and that no heat is gained or lost by the cup. (4 pts) (b) Calculate the number of moles of CaCl2. (3 pts) (c) Calculate the...