When ammonium nitrate dissolves in water at constant pressure, the temperature of the solution falls. Which...
When ammonium nitrate dissolves in water at constant pressure, the temperature of the solution falls. Which of the following statements must be incorrect?
A. The process is exothermic
B. The process is product-favoured
C. ∆S>0
D. ∆G<0
E. ∆H>0
Homework Answers
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When ammonium nitrate dissolves in water at constant pressure,
the temperature of the solution falls. Which...
When a 5.26-g sample of solid ammonium nitrate dissolves in 52.5 g of water in a...
When a 5.26-g sample of solid ammonium nitrate dissolves in 52.5
g of water in a coffee-cup calorimeter (see above figure) the
temperature falls from 24.00 oC to 17.20 oC.
Calculate H in kJ/mol NH4NO3 for
the solution process.
NH4NO3(s)
NH4+(aq) + NO3-(aq)
The specific heat of water is 4.18 J/g-K.
Hsolution = _________kJ/mol
NH4NO3.
When ammonium nitrate (NH4NO3) dissolves in water, the solution feels cool. Which statements are true? Select...
When ammonium nitrate (NH4NO3) dissolves in water, the solution feels cool. Which statements are true? Select all that apply. The process is endothermic. The attractive forces between solvent and solute particles are weaker than between the particles in the pure substances. The process is exothermic. The attractive forces between solvent and solute particles are stronger than between the particles in the pure substances.
E) Mg?"(aq) + 2 NO, (aq) —> Mg(NO)>(s) 8. When solid ammonium nitrate (NH.NOs) dissolves in...
E) Mg?"(aq) + 2 NO, (aq) —> Mg(NO)>(s) 8. When solid ammonium nitrate (NH.NOs) dissolves in water, the process is endothermic, with AH solution = +25.69 kJ/mol. (This reaction has been used in commercial cold packs.) If 5,60 8 NH.NO, is dissolved in 100.0 g of water at 22.0° C, what is the final temperature of the solution? The mass of the solution is 105.6 g (100.0 8 +5,60 g = 105.68) and its specific heat capacity is 4.18 J/(8-K)....
When a 5.12-g sample of solid sodium nitrate dissolves in 31.1 g of water in a...
When a 5.12-g sample of solid sodium nitrate dissolves in 31.1 g
of water in a coffee-cup calorimeter (see above figure) the
temperature falls from 25.00 oC to 16.37 oC.
Calculate H in kJ/mol NaNO3 for the solution
process.
NaNO3(s)
Na+(aq) + NO3-(aq)
The specific heat of water is 4.18 J/g-K.
We were unable to transcribe this imageWe were unable to transcribe this imagethermometer stirrer coffee cups containing reaction mixture When a 5.12-g sample of solid sodium nitrate dissolves in...
When a 4.25 g sample of solid ammonium nitrate dissolves in 60.0 g of water in a coffee-cup calorimeter, the temperatur...
When a 4.25 g sample of solid ammonium nitrate dissolves in 60.0 g of water in a coffee-cup calorimeter, the temperature drops from 22.0 degrees C to 16.9 degrees C. Calculate Delta H kJ/mol NH4NO3 for the solution process NH4NO3 ( s) yields NH4 (there is a plus sign above the four)(aq) + ^ + NO3(negative sign above the three) (aq) Assume that the specific heat of the solution is the same as that of pure water. Express your answer...
(1): When a 1.48-g sample of solid ammonium nitrate dissolves in 56.4 g of water in...
(1):
When a 1.48-g sample of solid ammonium nitrate dissolves in 56.4
g of water in a coffee-cup calorimeter (see above figure) the
temperature falls from 22.00 oC to 20.09 oC.
Calculate H in kJ/mol
NH4NO3 for the solution process.
NH4NO3(s)
NH4+(aq) +
NO3-(aq)
The specific heat of water is 4.18 J/g-K.
Hsolution
= __kJ/mol NH4NO3.
(2):
The reaction S2O82-(aq) + 3
I-(aq)
2 SO42-(aq) + I3-(aq)
was studied at a certain temperature with the following
results:
Experiment
[S2O82-(aq)] (M)...
When a 6.07-g sample of solid lead(II) nitrate dissolves in 31.9 g of water in a...
When a 6.07-g sample of solid lead(II) nitrate dissolves in 31.9
g of water in a coffee-cup calorimeter (see above figure) the
temperature falls from 22.00 oC to 18.47 oC.
Calculate H in kJ/mol Pb(NO3)2 for
the solution process.
Pb(NO3)2(s)
Pb2+(aq) + 2 NO3-(aq)
The specific heat of water is 4.18 J/g-K.
Hsolution = ?kJ/mol
Pb(NO3)2.
Gas pressure is caused by: A) barometers B) temperature C) gas molecules condensing into a liquid...
Gas pressure is caused by: A) barometers B) temperature C) gas molecules condensing into a liquid D) gas molecules hitting other gas molecules E) gas molecules colliding with surfaces 7) 8) What is the molarity of a solution that results when 21.3 g of (NH4)3PO4 (MM- 149 g/mol) is dissolved C) 0.357 M E) 1.61 x 10- water and brought to a total volume of 250.0 mL? D) 85.2 M B) 2.28 M A) 0.572 M 9) What is the...
There are a smallpackage of ammonium nitrate (NH4NO3) in water. When the inside bag is broken,...
There are a smallpackage of ammonium nitrate (NH4NO3) in water. When the inside bag is broken, the solute dissolves in the water. This dissolution requires energy and the water cools and freezes. I have done many experiments to find the best packs, and the market leader uses 300 g of the solute and 300 mL of water. It reaches a final temperature of -2 C. If I assume the dissolution processis so fast that it can be modelled as adiabatic,...
Instant cold packs, often used to ice athletic injuries on the field, contain ammonium nitrate and water separated by a...
Instant cold packs, often used to ice athletic injuries on the field, contain ammonium nitrate and water separated by a thin plastic divider. When the divider is broken, the ammonium nitrate dissolves according to the following endothermic reaction: NH4NO3(s)-->NH4 ^+(aq) + NO3^-(aq). In order to measure the enthalpy change for this reaction, 1.25 g of NH4NO3 is dissolved in enough water to make 25.0 mL of solution. The initial temperature is 25.8 degrees C and the final temperature (after the...
When a 5.26-g sample of solid ammonium nitrate dissolves in 52.5
g of water in a coffee-cup calorimeter (see above figure) the
temperature falls from 24.00 oC to 17.20 oC.
Calculate H in kJ/mol NH4NO3 for
the solution process.
NH4NO3(s)
NH4+(aq) + NO3-(aq)
The specific heat of water is 4.18 J/g-K.
Hsolution = _________kJ/mol
NH4NO3.
E) Mg?"(aq) + 2 NO, (aq) —> Mg(NO)>(s) 8. When solid ammonium nitrate (NH.NOs) dissolves in water, the process is endothermic, with AH solution = +25.69 kJ/mol. (This reaction has been used in commercial cold packs.) If 5,60 8 NH.NO, is dissolved in 100.0 g of water at 22.0° C, what is the final temperature of the solution? The mass of the solution is 105.6 g (100.0 8 +5,60 g = 105.68) and its specific heat capacity is 4.18 J/(8-K)....
When a 5.12-g sample of solid sodium nitrate dissolves in 31.1 g
of water in a coffee-cup calorimeter (see above figure) the
temperature falls from 25.00 oC to 16.37 oC.
Calculate H in kJ/mol NaNO3 for the solution
process.
NaNO3(s)
Na+(aq) + NO3-(aq)
The specific heat of water is 4.18 J/g-K.
We were unable to transcribe this imageWe were unable to transcribe this imagethermometer stirrer coffee cups containing reaction mixture When a 5.12-g sample of solid sodium nitrate dissolves in...
(1):
When a 1.48-g sample of solid ammonium nitrate dissolves in 56.4
g of water in a coffee-cup calorimeter (see above figure) the
temperature falls from 22.00 oC to 20.09 oC.
Calculate H in kJ/mol
NH4NO3 for the solution process.
NH4NO3(s)
NH4+(aq) +
NO3-(aq)
The specific heat of water is 4.18 J/g-K.
Hsolution
= __kJ/mol NH4NO3.
(2):
The reaction S2O82-(aq) + 3
I-(aq)
2 SO42-(aq) + I3-(aq)
was studied at a certain temperature with the following
results:
Experiment
[S2O82-(aq)] (M)...
When a 6.07-g sample of solid lead(II) nitrate dissolves in 31.9
g of water in a coffee-cup calorimeter (see above figure) the
temperature falls from 22.00 oC to 18.47 oC.
Calculate H in kJ/mol Pb(NO3)2 for
the solution process.
Pb(NO3)2(s)
Pb2+(aq) + 2 NO3-(aq)
The specific heat of water is 4.18 J/g-K.
Hsolution = ?kJ/mol
Pb(NO3)2.
Gas pressure is caused by: A) barometers B) temperature C) gas molecules condensing into a liquid D) gas molecules hitting other gas molecules E) gas molecules colliding with surfaces 7) 8) What is the molarity of a solution that results when 21.3 g of (NH4)3PO4 (MM- 149 g/mol) is dissolved C) 0.357 M E) 1.61 x 10- water and brought to a total volume of 250.0 mL? D) 85.2 M B) 2.28 M A) 0.572 M 9) What is the...
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