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.
Homework Answers
Pb(NO3)2(s) ---> Pb2+(aq) + 2 NO3-(aq)
heat absorbed(q) = m*s*DT
m = mass of solution = 31.9+6.07 = 37.97 g
s = specific heat of solution = water = 4.18 j/g.k
DT = 22.00 - 18.47 = 3.53 k
q = 37.97*4.18*3.53
= 560.3 joule
= 0.56 kj
No of mole of Pb(NO3)2 taken = w/m.wt = 6.07/331.2 = 0.0183 mole
DHsol = +q/n
= 0.56/0.0183
= +30.6 kj/mole
Add Answer to:
When a 6.07-g sample of solid lead(II) nitrate dissolves in 31.9
g of water in a...
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 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 7.46-g sample of solid sodium hydroxide dissolves in 36.9 g of water in a...
When a 7.46-g sample of solid sodium hydroxide dissolves in 36.9 g of water in a coffee-cup calorimeter (see above figure) the temperature rises from 24.00 oC to 68.26 oC. Calculate H in kJ/mol NaOH for the solution process. NaOH(s) Na+(aq) + OH-(aq) The specific heat of water is 4.18 J/g-K. Hsolution = . kJ/mol NaOH.
When a 3.13-g sample of liquid sulfuric acid dissolves in 33.6 g of water in a...
When a 3.13-g sample of liquid sulfuric acid dissolves in 33.6
g of water in a coffee-cup calorimeter (see above figure) the
temperature rises from 22.00 oC to 41.81 oC.
Calculate H in kJ/mol H2SO4 for
the solution process.
H2SO4(l)
2 H+(aq) + SO42-(aq)
The specific heat of water is 4.18 J/g-K.
Hsolution =____ kJ/mol
H2SO4.
(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 4.09-g sample of gaseous hydrogen bromide dissolves in 42.6 g of water in a...
When a 4.09-g sample of gaseous hydrogen bromide dissolves in
42.6 g of water in a coffee-cup calorimeter (see above figure) the
temperature rises from 21.00 oC to 42.94 oC. Calculate deltaH in
kJ/mol HBr for the solution process.
HBr(g) H+(aq) + Br-(aq)
The specific heat of water is 4.18 J/g-K.
delta Hsolution = _____ kJ/mol HBr.
I entered answers 77.27 and 84.81 and both were incorrect
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...
5.55 When a 6.50-g sample of solid sodium hydroxide dissolves in 100.0 g of water in...
5.55 When a 6.50-g sample of solid sodium hydroxide dissolves in 100.0 g of water in a coffee-cup calorimeter (Figure 5.18), the temperature rises from 21.6 °C to 37.8 °C. Calculate ?? (in kJ/mol NaOH) for the solution process NaOH(s)-Na"(aq) + OH-(aq) Assume that the specific heat of the solution is the same as that of pure water.
thermometer coffee cups containing reaction mixture When a 7.89-9 sample of solid potassium chlorate dissolves in...
thermometer coffee cups containing reaction mixture When a 7.89-9 sample of solid potassium chlorate dissolves in 32.0 g of water in a coffee-cup calorimeter (see above figure) the temperature falls from 20.00 °C to 3.899 °C. Calculate AH in kl/mol KCIOy for the solution process. KCIO,(s) - K*(aq) + CIO,'(aq) The specific heat of water is 4.18 3/ok Aucution - Kl/mol KCO,
When a 9.55 g sample of solid NaOH dissolves in 100.0 g of water in a...
When a 9.55 g sample of solid NaOH dissolves in 100.0 g of water in a coffee-cup calorimeter, the temperature rises from 23.6C to 47 for the solution process. (Assume that the specific heat of the solution is the same as that of pure water.) . .4 °C. Calculate AH (in kJ/mol NaOH)
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 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)...
5.55 When a 6.50-g sample of solid sodium hydroxide dissolves in 100.0 g of water in a coffee-cup calorimeter (Figure 5.18), the temperature rises from 21.6 °C to 37.8 °C. Calculate ?? (in kJ/mol NaOH) for the solution process NaOH(s)-Na"(aq) + OH-(aq) Assume that the specific heat of the solution is the same as that of pure water.
thermometer coffee cups containing reaction mixture When a 7.89-9 sample of solid potassium chlorate dissolves in 32.0 g of water in a coffee-cup calorimeter (see above figure) the temperature falls from 20.00 °C to 3.899 °C. Calculate AH in kl/mol KCIOy for the solution process. KCIO,(s) - K*(aq) + CIO,'(aq) The specific heat of water is 4.18 3/ok Aucution - Kl/mol KCO,
When a 9.55 g sample of solid NaOH dissolves in 100.0 g of water in a coffee-cup calorimeter, the temperature rises from 23.6C to 47 for the solution process. (Assume that the specific heat of the solution is the same as that of pure water.) . .4 °C. Calculate AH (in kJ/mol NaOH)
Most questions answered within 3 hours.
-
2) You are given the task of finding a representation for a
circle in a drawing...
asked 19 minutes ago -
STUDY QUESTION: Does use of diet drug fen-phen
(fenfluramine-phentermine) cause valvular heart disease?
HINT: Valvular heart...
asked 11 minutes ago -
1. An object weighing 40 N rests on a surface. The coefficient
of friction is 0.35....
asked 1 hour ago -
Investor company owns 35% of investee company voting stock and
accounts for the investment under the...
asked 2 hours ago -
The number of major faults on a randomly chosen 1 km stretch of
highway has a...
asked 2 hours ago -
Consider the competitive environment of Starbuck's, Progressive
Insurance, a manufacturing firm with low turnover, or a...
asked 3 hours ago -
3. Gains from trade
Consider two neighbouring island countries called Euphoria and
Contente. They each have...
asked 5 hours ago -
A business executive has the option to invest money in two
plans: Plan A guarantees that...
asked 7 hours ago -
Hello, can someone please help me answer this question?
How much heat is absorbed by a...
asked 7 hours ago -
. A marketing researcher conducted a survey of 25 shoppers
randomly selected at the local mall...
asked 8 hours ago -
Create an comprehensive response to the
following:
Antimicrobial agents work on a multitude of microbes (bacteria,...
asked 8 hours ago -
6.13 LAB: Step counter. Section 6.3.
A pedometer treats walking 2,000 steps as walking 1 mile....
asked 8 hours ago