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

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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152 A 352.44 155 T 362.31 153 G 355.67 156 X 365.88 Consider the following reaction: + 2 XD → AD2 + 2 GX = -487.4 kJ 154 D 359.12 157 Z 369.52 AG₂ ΔΗ rxn You measure that -863.2 kJ of heat are released. Calculate the number of grams of XD that have been reacted in excess AG2 based on the measured heat released.
One way the U.S. Environmental Protection Agency (EPA) tests for chloride contaminants in water is by titrating a sample of silver nitrate solution. Any chloride anions in solution will combine with the silver cations to produce bright white silver chloride precipitate. Suppose an EPA chemist tests a 200. mL sample of groundwater known to be contaminated with tin(II) chloride, which would react with silver nitrate solution like this: SnCl,(aq) + 2 AgNO3(aq) → 2 AgCl(s) + Sn(NO,),(aq) 2 The chemist adds 77.0 mM silver nitrate solution to the sample until silver chloride stops forming. He then washes, dries, and weighs the precipitate. He finds he has collected 3.3 mg of silver chloride. Calculate the concentration of tin(II) chloride contaminant in the original groundwater sample. Be sure your answer has the correct number of significant digits. mg x10 Submit Assignmen Continue O2020 McGraw-Hill Education. All Rights Reserved. Terms of Use | Privacy Accessibilis rse Syllabus..pdf FINAL…
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