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A student wishes to measure the enthalpy change of the reaction of magnesium oxide solid (MgO, M= 40.30 g/mol) with hydrochloric acid (HCl, M= 36.46 g/mol), by the reaction represented in the equation below. MgO(s) + 2 HCI(ag) → MgCl,(aq) + H,0(t) (a) The student designs an experiment to dissolve 1.00g of MgO(s) in an insulated cup containing 100.g of HCI(aq) with a slight molar excess of the acid. What minimum concentration of HCI in moles per liter is needed for the experiment? Assume the density of the solution is 1.00g/mL (b) The student carries out the experiment and measures a temperature rise of 8.27°C (i) Assuming the specific heat capacity of the solution is 4.00 J/g°C, calculate the amount of heat absorbed by the solution from this reaction. (ii) Calculate the experimental enthalpy change for this reaction in KJ/moln Include the sign

A student wishes to measure the enthalpy change of the reaction of magnesium oxide solid (MgO, M= 40.30 g/mol) with hydrochloric acid (HCl, M= 36.46 g/mol), by the reaction represented in the equation below. MgO(s) + 2 HCI(ag) → MgCl,(aq) + H,0(t) (a) The student designs an experiment to dissolve 1.00g of MgO(s) in an insulated cup containing 100.g of HCI(aq) with a slight molar excess of the acid. What minimum concentration of HCI in moles per liter is needed for the experiment? Assume the density of the solution is 1.00g/mL (b) The student carries out the experiment and measures a temperature rise of 8.27°C (i) Assuming the specific heat capacity of the solution is 4.00 J/g°C, calculate the amount of heat absorbed by the solution from this reaction. (ii) Calculate the experimental enthalpy change for this reaction in KJ/moln Include the sign

General Chemistry - Standalone book (MindTap Course List)
General Chemistry - Standalone book (MindTap Course List)
11th Edition
ISBN:9781305580343
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Chapter6: Thermochemisty
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Problem 6.160QP: A rebreathing gas mask contains potassium superoxide, KO2, which reacts with moisture in the breath...
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A student wishes to measure the enthalpy change of the reaction of magnesium oxide solid (MgO, M= 40.30 g/mol) with hydrochloric acid (HCI, M = 36.46 g/mol), by the reaction represented in the equation below. MgO(s) +2 HCI(aq) → MgCl,(aq) + H,0(t) (a) The student designs an experiment to dissolve 1.00g of MgO(s) in an insulated cup containing 100.g of HCI(aq) with a slight molar excess of the acid. What minimum concentration of HCI in moles per liter is needed for the experiment? Assume the density of the solution is 1.00g/mL (b) The student carries out the experiment and measures a temperature rise of 8.27°C (i) Assuming the specific heat capacity of the solution is 4.00 J/g°C, calculate the amount of heat absorbed by the solution from this reaction. (ii) Calculate the experimental enthalpy change for this reaction in KJ/moln Include the sign 'rxn
Transcribed Image Text:A student wishes to measure the enthalpy change of the reaction of magnesium oxide solid (MgO, M= 40.30 g/mol) with hydrochloric acid (HCI, M = 36.46 g/mol), by the reaction represented in the equation below. MgO(s) +2 HCI(aq) → MgCl,(aq) + H,0(t) (a) The student designs an experiment to dissolve 1.00g of MgO(s) in an insulated cup containing 100.g of HCI(aq) with a slight molar excess of the acid. What minimum concentration of HCI in moles per liter is needed for the experiment? Assume the density of the solution is 1.00g/mL (b) The student carries out the experiment and measures a temperature rise of 8.27°C (i) Assuming the specific heat capacity of the solution is 4.00 J/g°C, calculate the amount of heat absorbed by the solution from this reaction. (ii) Calculate the experimental enthalpy change for this reaction in KJ/moln Include the sign 'rxn
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