When 3.62 g of cesium perchlorate (CSCIO4) is dissolved in 119 g of water in a styrofoam calorimeter of negligible heat capacity, the temperature drops from 25.00 to 23.19 °C. Based on this observation, calculate q for the water and AH° for the process, assuming that the heat absorbed by the salt is negligible. CSCIO4(s)→→→Cs*(aq) + CIO4 (aq) The specific heat of water is 4.184J °C-1 g¹. Give the answers in kl. 9H₂O = ΔΗ° = kj kj

When 3.62 g of cesium perchlorate (CSCIO4) is dissolved in 119 g of water in a styrofoam calorimeter of negligible heat capacity, the temperature drops from 25.00 to 23.19 °C. Based on this observation, calculate q for the water and AH° for the process, assuming that the heat absorbed by the salt is negligible. CSCIO4(s)→→→Cs*(aq) + CIO4 (aq) The specific heat of water is 4.184J °C-1 g¹. Give the answers in kl. 9H₂O = ΔΗ° = kj kj

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...

See similar textbooks

Similar questions

A 50.0 mL sample of 0.150 M aqueous hydrochloric acid is added to 50.0 mL of 0.150 M aqueous ammonia in a coffee cup calorimeter. The following reaction occurs when the two solutions are mixed: HCl(aq) + NH3(aq) → NH4Cl(aq) The temperature of the solution increases by 2.30°C. Calculate ΔrH per mole of HCl and NH3 reacted. Assume no heat is lost to the calorimeter, and the density and specific heat capacity of the solution is that of pure water (d=1 g/mL, Cs = 4.18 J/gK).
A student dissolves 13.2 g of sodium hydroxide (NaOH)in 300. g of water in a well-insulated open cup. She then observes the temperature of the water rise from 21.0 °C to 33.4 °C over the course of 5.3 minutes. Use this data, and any information you need from the ALEKS Data resource, to answer the questions below about this reaction: + NaOH (s) — Na" (ад) + ОН (ад) olo You can make any reasonable assumptions about the physical properties of the solution. Be sure answers you calculate using measured data are rounded to 3 significant digits. Ar Note for advanced students: it's possible the student did not do the experiment carefully, and the values you calculate may not be the same as the known and published values for this reaction. exothermic x10 Is this reaction exothermic, endothermic, or neither? endothermic neither If you said the reaction was exothermic or endothermic, calculate the amount of heat that was released or absorbed by the reaction in this case. kJ kJ Calculate the…
Calculate the standard enthalpy change for the reaction at 25 °C. Standard enthalpy of formation values can be found in this list of thermodynamic properties. H, O(g)+C(graphite)(s) → H, (g)+CO(g) kJ AHixn
A student dissolves 10.9 g of ammonium chloride (NH,Cl) in 200. g of water in a well-insulated open cup. She then observes the temperature of the water fall from 20.0 °C to 16.1 °C over the course of 3.8 minutes. Use this data, and any information you need from the ALEKS Data resource, to answer the questions below about this reaction: NH,CI (s) → NH (aq) + Cl¯(aq) You can make any reasonable assumptions about the physical properties of the solution. Be sure answers you calculate using measured data are rounded to the correct number of significant digits. Note for advanced students: it's possible the student did not do the experiment carefully, and the values you calculate may not be the same as the known and published values for this reaction. Ar exothermic Is this reaction exothermic, endothermic, or neither? endothermic neither If you said the rea heat that was released or absorbed by the reaction in this case. I kJ ion was exothermic or endothermic, calculate the amount of kJ…
Combustion of C12H22O11(s) (sucrose or "table sugar") produces CO2(g) and H2O(l). When 3.96 g of sucrose is combusted in a constant volume (bomb) calorimeter, 65.3 kJ of heat is liberated. Calculate ΔE for the combustion of 2.75g of sucrose. Calculate ΔH for the combustion of 2.75 g of sucrose.
Balance the following equation and calculate its ΔSo in units of J mol-1 K-1. Fe(s) + H2O(l) → Fe3O4(s) + H2(g) Fe(s) - 27.3 J mol-1 K-1 H2O (l) - 70 J mol-1 K-1 Fe3O4 (s) - 146.4 J mol-1 K-1 H2 (g) - 130.7 J mol-1 K-1
Consider the Gibbs free energy change for the conversion of glucose to fructose that occurs during the metabolism of sugar (∆GRXN = +2.1 kJ) What is the value of the equilibrium constant (Keq) when the conversion takes place at 24.9 °C?
Potassium nitrate, KNO3, has a molar mass of 101.1 g/mol. In a constant-pressure calorimeter, 48.1 g of KNO3KNO3 is dissolved in 229 g of water at 23.00 °C. KNO3(s)−→−−H2OK+(aq)+NO−3(aq) The temperature of the resulting solution decreases to 17.80 °C. Assume that the resulting solution has the same specific heat as water, 4.184 J/(g·°C), and that there is negligible heat loss to the surroundings. How much heat was released by the solution? ?soln= kJ What is the enthalpy of the reaction? Δ?rxn= kJ/mol
The standard enthalpy of formation of SnCl₂ (s) is - 340 kJ/mol and that for SnCl4 (s) is-511 kJ/mol. From these data, we can calculate that for the reaction SnCl₂ (s) + Cl₂ (g) →→SnCl4 (s), the value of AH O cannot be determined as AH, for Cl₂ (g) is not given. O equals - 851 kJ. O equals + 171 kJ. O equals - 171 kJ.
A 0.588 g sample of liquid C5H12 was combusted using excess oxygen gas inside a bomb calorimeter, with the products being carbon dioxide gas and liquid water. The calorimeter's heat capacity is 4.706 kJ °C-1. If the temperature inside the calorimeter increased from 25.0 °C to 29.9 °C, determine ΔrU for this reaction in kJ mol-1 (with respect to C5H12). Do not worry about how realistic the final answer is. Express answer in 2 significant figures.
A student dissolves 12.3 g of ammonium chloride (NH4Cl) in 200. g of water in a well-insulated open cup. He then observes the temperature of the water fall from 21.0 °C to 17.4 °C over the course of 3.6 minutes. Use this data, and any information you need from the ALEKS Data resource, to answer the questions below about this reaction: NH4Cl (s) NH(aq) + CT (aq) You can make any reasonable assumptions about the physical properties of the solution. Be sure answers you calculate using measured data are rounded to 2 significant digits. Note for advanced students: it's possible the student did not do the experiment carefully, and the values you calculate may not be the same as the known and published values for this reaction. Is this reaction exothermic, endothermic, or neither? If you said the reaction was exothermic or endothermic, calculate the amount of heat that was released or absorbed by the reaction in this case. Calculate the reaction enthalpy ΔΗ per mole of NH Cl. rxn n exothermic…
A student dissolves 11.0 g of potassium hydroxide (KOH) in 200. g of water in a well-insulated open cup. He then observes the temperature of the water rise from 22.0 °C to 33.7 °C over the course of 8.5 minutes. Use this data, and any information you need from the ALEKS Data resource, to answer the questions below about this reaction: КОН(:) K*(aq) + OH (aq) You can make any reasonable assumptions about the physical properties of the solution. Be sure answers you calculate using measured data are rounded to the correct number of significant digits. Note for advanced students: it's possible the student did not do the experiment carefully, and the values you calculate may not be the same as the known and published values for this reaction. O exothermic Is this reaction exothermic, endothermic, or neither? O endothermic O neither If you said the reaction was exothermic or endothermic, calculate the amount of heat that was released or absorbed by the reaction in this case. I kJ Calculate…