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# Measuring AH Using a Coffee-Cup CalorimeterWhen a student ISBN: 9780321910417 77

## Solution for problem 1PE Chapter 5.7SE

Chemistry: The Central Science | 13th Edition

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Problem 1PE

Problem        1PE

Measuring AH Using a Coffee-Cup Calorimeter

When a student mixes 50 ml of 1.0 MHCI and 50 ml of 1.0 MNaOH in a coffee-cup calorimeter, the temperature of the resultant solution increases from 21.0 to 27.5 °C.

Calculate the enthalpy change for the reaction in kJ/mol HCI, assuming that the calorimeter loses only a negligible quantity of heat, that the total volume of the solution is 100 ml_, that its density is 1.0 g/ml, and that its specific heat is 4.18 J/g-K.

When 0.243 g of Mg metal is combined with enough HCI to make 100 ml_ of solution in a constant-pressure calorimeter, the following reaction occurs:

Mg(s) + 2 HCI(ag)—>MgCI2(ag) + H2(g)

If the temperature of the solution increases from 23.0 to 34.1 °C as a result of this reaction, calculate AH in kJ/mol Mg. Assume that the solution has a specific heat of 4.18 J/g-°C. (a) -19.1 kJ/mol, (b) -111 kJ/mol, (c) -191 kJ/mol, (d) -464 kJ/mol, (e) -961 kJ/mol

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##### ISBN: 9780321910417

Chemistry: The Central Science was written by and is associated to the ISBN: 9780321910417. This textbook survival guide was created for the textbook: Chemistry: The Central Science, edition: 13. This full solution covers the following key subjects: . This expansive textbook survival guide covers 305 chapters, and 6351 solutions. The full step-by-step solution to problem: 1PE from chapter: 5.7SE was answered by , our top Chemistry solution expert on 09/04/17, 09:30PM. The answer to “Measuring AH Using a Coffee-Cup CalorimeterWhen a student mixes 50 ml of 1.0 MHCI and 50 ml of 1.0 MNaOH in a coffee-cup calorimeter, the temperature of the resultant solution increases from 21.0 to 27.5 °C.Calculate the enthalpy change for the reaction in kJ/mol HCI, assuming that the calorimeter loses only a negligible quantity of heat, that the total volume of the solution is 100 ml_, that its density is 1.0 g/ml, and that its specific heat is 4.18 J/g-K.When 0.243 g of Mg metal is combined with enough HCI to make 100 ml_ of solution in a constant-pressure calorimeter, the following reaction occurs:Mg(s) + 2 HCI(ag)—>MgCI2(ag) + H2(g)If the temperature of the solution increases from 23.0 to 34.1 °C as a result of this reaction, calculate AH in kJ/mol Mg. Assume that the solution has a specific heat of 4.18 J/g-°C. (a) -19.1 kJ/mol, (b) -111 kJ/mol, (c) -191 kJ/mol, (d) -464 kJ/mol, (e) -961 kJ/mol” is broken down into a number of easy to follow steps, and 157 words. Since the solution to 1PE from 5.7SE chapter was answered, more than 230 students have viewed the full step-by-step answer.

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Measuring AH Using a Coffee-Cup CalorimeterWhen a student

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