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Enthalpy Calculation
Page 2
Questions (110)
Using this equation: CH4(g)+2O2(g)---> CO2(g)+ 2H2O(l)
What is the value of Enthalpy( triangle H) if 15.00g of O2 is reacted??
2 answers
asked by
Anonymous
939 views
If the molecular mass for a chemical is 45.99 g/mol and the enthalpy of formation is 34 kJ/mol, the heat change will be
2 answers
asked by
Mary
585 views
In a thermochemistry experiment the reaction of 0.0857 g of an unknown metal and an excess of 4.0 M HCl resulted in a 0.210 mL
6 answers
asked by
Raj
2,848 views
Given the following data:
S(s) + 3/2 O2(g)-->SO3(g) ∆H = -395.2 kJ 2SO2(g) + O2(g) -->2SO3(g)∆H = -198.2 kJ Calculate ∆H
3 answers
asked by
Eddie
2,616 views
The homework question is :
Calculate the Delta H for the following reaction: C6H6 + O2 -> C + H2O(l) State whether the reaction
4 answers
asked by
Alexa
1,931 views
How would you calculate delta H for the following reaction:
2P + 5Cl2 -> 2PCl5 Given: PCl3 + Cl2 -> PCl5 Delta H=-87.9 kJ 2P +
3 answers
asked by
Samantha
1,893 views
When 1 mole of ethylene (C2H4) is burned at constant pressure, 1410 kJ of energy is released as heat. Calculate dH for a process
4 answers
asked by
Emily
1,782 views
Nitroglycerin is a powerful explosive, giving four different gases when detonated.2 C3H5(NO3)3 (l) → 3 N2 (g) + 1/2 O2 (g) + 6
3 answers
asked by
ogi
1,779 views
The complete combustion of butane, (g) is represented by the equation
C4H10+13/2O2->4CO2+5H20 STANDARD ENTHALPY IS -2877KJ/MOL
3 answers
asked by
tomi
1,588 views
Use the ΔH°f information provided to calculate ΔH°rxn for the following:
ΔH°f (kJ/mol) SO2Cl2 (g) + 2 H2O(l)
4 answers
asked by
yr
1,571 views
Many portable gas heaters and grills use propane, C3H8(g).
Using enthalpies of formation, calculate the quantity of heat produced
4 answers
asked by
Marcus
1,614 views
Calculate the change in enthalpy for the following reaction:
C25H52(g) + O2(g) → CO2(g) + H2O(l) I started off by balancing the
3 answers
asked by
Dolcezza
1,355 views
Calculate the change in enthalpy produced by dissolving 14.3 g of NaOH in 65.0 g of water if the temperature increases 49.1°C
2 answers
asked by
Morgan
1,291 views
In a coffee-cup calorimeter, 1.50 g of NH4NO3 is mixed with 72.0 g of water at an initial temperature of 25.00°C. After
3 answers
asked by
Courtney
1,132 views
I'm supposed to estimate the ΔH for
O || H2C=CH2 +O3(g)--- CH3CH(g) + O2(g) and i got
2 answers
asked by
Jacqueline
1,113 views
A calorimeter contains 30.0 mL of water at 11.0 degrees C. When 1.50 g of X (a substance with a molar mass of 65.0 g/mol) is
2 answers
asked by
Abby
1,129 views
The combustion of benzoic acid releases 26.38kJ/g and is often used to calibrate a bomb calorimete. The combustion of 1.045g of
10 answers
asked by
Sindy
1,123 views
A reaction is peformed in which 50 ml of .400M silver nitrate and 75 ml of .100M hydrochloric acid are mixed together. The
2 answers
asked by
Lydia
997 views
Hydrogen peroxide decomposes according to the following thermochemical reaction
H2O2 --> H2O +1/2 O2 ; H= -98.2 kJ calculate the
3 answers
asked by
Brittany
1,041 views
When 1 mole of ethylene (C2H4) is burned at constant pressure, 1410 kJ of energy is released as heat. Calculate (delta) H for a
2 answers
asked by
Emily
1,007 views
I am to use this formula to find ΔH°f,methane:
ΔH°comb=2ΔH°f,water+ΔH°f, carbon dioxide-ΔH°f,methane-2ΔH°f,oxygen For
2 answers
asked by
Liz
986 views
Calculate the value of ΔHo for the reaction
2 CH4 (g) -> C2H6 (g) + H2 (g) given the following thermochemical equations: C2H2
2 answers
asked by
rhea
929 views
Consider the information given below
ΔH⁰/ kJmol-1 Enthalpy of lattice formation for CaF2 -2611 Enthalpy of hydration for Ca2+
2 answers
asked by
chansa
873 views
Using the following thermochemical data, what is the change in enthalpy for the following reaction?
2H¿(g) + 2C(s) + O¿(g) d
3 answers
asked by
caleb
1,090 views
Calculate the enthalpy of the reaction
2B2H6 + 6O2=2B2O3 +6H2O given the following pertinent information: A. B2O3(s) + 2H2) )g) =
1 answer
asked by
B
805 views
The heat evolved in the reaction of hydrobromic acid with potassium hydroxide was determined using a coffee coup calorimeter.
3 answers
asked by
TOM
814 views
a 35.6g sample of ethanol (c2h5oh) is burned a bomb calorimeter, according to the following reaction. If the temperature rose
1 answer
asked by
and6260
809 views
When 50.0 cm3 of 0.100 mol dm-3 AgNO3 is mixed with 50.0 cm3 of 0.0500 dm-3 HCl in a polystyrene cup, the temperature increases
2 answers
asked by
Anonymous
773 views
Calculate the chage in enthalpy produced by dissolving 14.3 g NaOH in 65.0 g of water if the temperature increases 49.1 C and
2 answers
asked by
so
741 views
Welders often use acetylene torches heat up the metal. The reaction is:
C2H2(g) + 2.5O2(g) = 2CO2(g) + H2O(g) Calculate the ΔH
2 answers
asked by
danny 16
697 views
Enthalpy
I'm given that the heat of reaction for the combustion of ethane is -1560kJ/mol. I need to figure out how much heat is
1 answer
asked by
Justin
699 views
CH4(g)+2O2 arrow CO2(g)+2H2O(1) delta H=-890.3kJ. Calculate delta Hwhen 5 grams of methane react with an excess of oxgen?o i
1 answer
asked by
Anonymous
603 views
From the following Information, calculate the standard change of enthalpy for the combustion of coal. SHOW WORK AND BALANCED
2 answers
asked by
Chloe
606 views
A 1.0-g sample of MgCl2 produced a 10.00C increase in a calorimeter charged with 40.0mL of deionized water. The specific heat is
2 answers
asked by
M
606 views
Find the enthalpy for 10.0g of NH3 when it is made from molecular hydrogen and molecular nitrogen. The answer is -27.2kj but I'm
2 answers
asked by
Lia
564 views
estimate Delta H for the following reaction
C2H4 (g)+3O2(g)→2 CO2(g)+2 H2O(g) So we have (4) C-H bonds and (1) C=C bond or (H =
2 answers
asked by
Anon
559 views
How do I measure Delta H^degree for the reaction that occurs when reagents A and B are combined: A + B <-->? Please note that
2 answers
asked by
Sammantha Avants
571 views
A propane barbeque is used to heat up 400g of water in an aluminum pot until it is boiling. Using the following information,
2 answers
asked by
Bob
560 views
Please help me! I don't know how to do this at all.
Calculate the enthalpy for the reaction: NO (g) + O (g) → NO2 Given the
2 answers
asked by
Luca
547 views
1) Determine the value of delta H net for the following equation:
SnBr2(s) + TiCl4(l) -> TiBr2(s) + SnCl4(l) I am not sure how to
4 answers
asked by
Hannah
540 views
For the following reaction, what is the approximate value of Delta H?
CH4(g) --> CH3(g) + H(g) I figured it out.. C-H = 411 4
1 answer
asked by
Wade
585 views
So my chem professor had a slide with a question that follows:
If you combine 100 ml of 0.10 M HCl and 100 ml of 0.10 M NaOH, and
3 answers
asked by
Angely R.
523 views
there's a 5.44 g sample of NH4NO3 and 150 g sample of water. So they ask for the change in enthalpy in kJ/mol. They give the
2 answers
asked by
anna
515 views
[2.0 mol (-285.91 kJ/mol)] + [1.0 mole (0 kJ/mol)] - [1.0 mole (50.61 kJ/mol)] = ??? I came up with the answer of -622.43 but im
2 answers
asked by
David
514 views
Calculate the value of T delta S (KJ) of reaction for the equation as written. (It is given that the standard enthalpies (J/K
7 answers
asked by
Anonymous
516 views
Methane gas, CH4(g), is combined with chlorine gas and fluorine gas to produce Freon-12 gas,
CF2Cl2(g). The balanced chemical
1 answer
asked anonymously
44 views
Calculate the enthalpy (ΔHo) of reaction (kJ) for the equation as written. If the answer is negative, enter the sign and then
1 answer
asked by
ChemGeek
503 views
In a student's experiment, when 40 mL of 6% (w/w) hydrogen peroxide solution was reacted with 10 mL 0.5 M FeCl3 solution, a ΔrH
4 answers
asked by
Anon
494 views
In the experiment you have added 50.0 mL of Ni(H2O)6
2+ to the calorimeter. To this you add 5.0 mL of ethlylenediamine and
2 answers
asked by
Barb
451 views
Determination of enthalpy of formation of diboron trioxide with steam
1 answer
asked by
Nansubuga
452 views
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Parent Categories (9)
Chemical Reactions
Chemistry
Heat Transfer
Reaction kinetics
Stoichiometry
Thermochemical Data
Thermochemistry
Thermodynamics
Thermodynamics/Energy