(a)
Interpretation:
The sign of change in conversion of liquid water to solid ice is to be determined. The reaction showing heat as either reactant or product is to be written.
Concept Introduction:
Enthalpy
The value of heat formed in a reaction
If the value obtained for
(b)
Interpretation:
The energy released for the conversion of
Concept Introduction:
Enthalpy
The value of heat formed in a reaction
If the value obtained for
Conversion of
(c)
Interpretation:
The energy released for freezing
Concept Introduction:
Enthalpy
The value of heat formed in a reaction
If the value obtained for
From its given mass is,
(d)
Interpretation:
The heat required for melting one mole of
Concept Introduction:
Enthalpy
The value of heat formed in a reaction
If the value obtained for
Want to see the full answer?
Check out a sample textbook solutionChapter 7 Solutions
Fundamentals of General, Organic, and Biological Chemistry (8th Edition)
- For ferrocene (C10H10Fe) the enthalpy of sublimation is 73.2 kJ/mol and the entropy of sublimation is 243 J/mol.K. What is the sublimation temperature of ferrocene in degrees Celsius?arrow_forwardTo form S²⁻ ions from gaseous sulfur atoms requires 214 kJ/mol, but these ions exist in solids such as K₂S. Explainarrow_forwardThe amount of heat in kJ required to convert 0.7 gal of liquid water to steam equal… ?arrow_forward
- A compound with empirical formula C2H5O was found in a separate experiment to have a molar mass of approximately 90 g. What is the molecular formula of the compound?arrow_forwardUnder what conditions is the entropy H(X) equal to zero?arrow_forwardFor the following reaction 3 experiments have been run and the data collected is in the following table @ 35 degrees Celsius 2 NO2F(g) ---> 2 NO2(g) + F2(g) Experiment [NO2F], M Rates, M/s 1 0.263 0.168 2 0.349 0.223 3 0.421 0.269 a) How long will it take for a 65% NO2F solution to become a 31% NO2F solution @35 degrees Celsius?(Hint: Use mass ratios and assume ~1g/ml for density of solutions to get you started) b) It has been determined that at 75 degrees Celsius the rate constant is 1.046 s-1. Calculate the activation energy for the decomposition of NO2F. [Hint: ]ln?1?2=?a?(1?2―1?1) c) What is the half-life of a 35% solution of NO2F @ 35 degrees Celsius?arrow_forward
- How is Kw defined, and what is its numerical value at 25 °C (298 K)?arrow_forwardThe following reaction plays a key role in the destruction of ozone in the atmosphere: Cl(g)+ O3 (g)-> ClO(g)+O2 (g) Given the standard molar entropies (S°) below, calculate the ΔS for this reaction. S°C1O = 218.9 J/mol*K S°O3 = 238.8 J/mol*K S°Cl = 165.2 J/mol*K S°O2= 205.0 J/mol*K _______ J/K = ΔSarrow_forwardHow many moles of ions are in 1.75 mol of K2SO4?arrow_forward
- What is the equivalent of 7 ppb in µg sol/L?arrow_forwardHow many grams of glucose (C6H2O6 molecular mass =180daltons) would be present in one liter of a 1M (molar) solution of glucose?arrow_forwardCalculate the Keq (report up to two decimal places and do not use scientific notation) for the net reaction at 298.15K. (see attached image) Note: R = 1.98 x 10 -3 kcal/mol-Karrow_forward
- BiochemistryBiochemistryISBN:9781319114671Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.Publisher:W. H. FreemanLehninger Principles of BiochemistryBiochemistryISBN:9781464126116Author:David L. Nelson, Michael M. CoxPublisher:W. H. FreemanFundamentals of Biochemistry: Life at the Molecul...BiochemistryISBN:9781118918401Author:Donald Voet, Judith G. Voet, Charlotte W. PrattPublisher:WILEY
- BiochemistryBiochemistryISBN:9781305961135Author:Mary K. Campbell, Shawn O. Farrell, Owen M. McDougalPublisher:Cengage LearningBiochemistryBiochemistryISBN:9781305577206Author:Reginald H. Garrett, Charles M. GrishamPublisher:Cengage LearningFundamentals of General, Organic, and Biological ...BiochemistryISBN:9780134015187Author:John E. McMurry, David S. Ballantine, Carl A. Hoeger, Virginia E. PetersonPublisher:PEARSON