Enthalpy Calculation

Welcome to the Enthalpy Calculation category on Questions LLC! Whether you're a student learning about thermodynamics or a professional seeking to deepen your understanding of enthalpy, this is the perfect place for you. Here, you will find an array of questions on Enthalpy Calculation, a key concept in thermodynamics that helps us understand energy changes in chemical reactions and phase transitions. Whether you are looking for guidance on calculating enthalpy values, exploring the relationship between enthalpy and heat transfer, or seeking real-life applications of this concept, our community of experts and enthusiasts is here to help. So, join us in exploring the fascinating world of Enthalpy Calculation and expand your knowledge on this essential topic.

Questions (110)

calculate the lattice enthalpy of potassium fluoride from the following data:enthalpy of formation of K(g): +89 kJ · mol−1
1. 5 answers
2. asked by alexandra
3. 6,751 views
Propane (C3H8) burns according to the following balanced equation: C3H8(g)+5O2(g)→3CO2(g)+4H2O(g) Part A Calculate ΔH∘rxn
1. 4 answers
2. asked by lea
3. 1,654 views
Calculate delta H for the formation of one mole of N2O5 from the elements at 25 degrees C using the following data.2H2 + O2 -
1. 6 answers
2. asked by Anonymous
3. 3,652 views
Calculate the enthalpy for the following reaction: 4 NH3 (g) + 5 O2 (g) into 4 NO (g) + 6 H2O (g).You may only use the following
1. 5 answers
2. asked by Mandy
3. 3,388 views
When a 7.50 g sample of solid NaOH dissolves in100.00 g of water in a coffee-cup calorimeter, the temperature rises from 21.6°C
1. 2 answers
2. asked by ezile
3. 106 views
Instant cold packs, often used to ice athletic injuries on the field, contain ammonium nitrate and water separated by a thin
1. 3 answers
2. asked by Smith
3. 1,941 views
A 65.0 g sample of 0.600 M HI at 18.46 degrees celsius is added to 84.0 g of solution containing excess KOH, also at 18.46
1. 4 answers
2. asked by Rose Bud
3. 1,545 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
1. 5 answers
2. asked by Erica
3. 1,853 views
500.0 mL of 0.220 mol/L HCl(aq) was added to a high quality insulated calorimeter containing 500.0mL of 0.200 mol/L
1. 4 answers
2. asked by Meenaakshi
3. 3,607 views
Data: SO2(g)+ 1/2O2(gas)forms SO3(g)Delta H = -99.1 kJ.Given the above data, calculate the enthalpy change when 89.6 g of SO2 is
1. 4 answers
2. asked by lavonne
3. 3,642 views
Calculate the delta H for the reactionN2H4(l)+ O2(g) --> N2(g) + 2H20(l) Given the following data: 2NH3(g) + 3N20(g) --> 4N2(g)
1. 4 answers
2. asked by kilo
3. 12,087 views
"For which of the following equations is the value of delta H equivalent to the bond enthalpy for the carbon-oxygen bond in
1. 4 answers
2. asked by Stuck
3. 1,580 views
Calculate the molar enthalpy for the following reaction.HCl(aq) + NH3 (aq) --> NH4Cl (aq). HCl = 50 ml (2.00M) NH3 = 50 ml (2.05
1. 7 answers
2. asked by Emma
3. 3,011 views
how to calculate delta h for the reaction2B(s)+3H2(g)arrow B2H6(g)given the following data: 2B(s)+3/2O2(g)arrowB2O3(s)
1. 4 answers
2. asked by georgina
3. 3,943 views
NH4NO3(s) NH4+(aq) + NO3−(aq)In order to measure the enthalpy change for this reaction above, 1.07 g of NH4NO3 is dissolved in
1. 4 answers
2. asked by DeeDee
3. 4,207 views
Calculate Delta H for 4NH3 + 5O2 --> 4NO + 6H2Ousing: N2 +O2 --> 2NO DH= -180.5 kJ N2 + 3H2 --> 2NH3 DH= -91.8 kJ 2H2 + O2 -->
1. 4 answers
2. asked by Taylor
3. 10,715 views
Hydrogen sulfide, H2S is a foul smelling gas. It burns to form sulfur dioxide.2H2S +3O2 ----> 2N2 +6H2O Delta H=-1036kJ
1. 3 answers
2. asked by Lauren
3. 1,147 views
Calculate the change in enthalpy when 52.0 g of solid chromium at 25°C and 1 atm pressure is oxidized. (H°f for Cr2O3(s) is
1. 3 answers
2. asked by Jessica
3. 2,703 views
At constant pressure and 25 degrees C, what is delta H for the reaction2C2H6(g) + 7O2(g) --yields-- 4CO2(g) + H2O(l) if the
1. 4 answers
2. asked by marcus
3. 3,739 views
calculate enthalpy of H for the reactionN2H4(l) + 2H2O(l) -> N2(g) + 4H2)(l) Given the reactions N2H4(l) + O2(g) -> N2(g) +
1. 4 answers
2. asked by Rose Bud
3. 3,572 views
Please help meN2O5(g) + H2O(l) --> 2HNO3(l) delta H° = -76.2 kJ H2O(l) --> H2(g) + 1/2O2(g) delta H° = 286.0 kJ 1/2N2(g) +
1. 5 answers
2. asked by Brooke
3. 2,917 views
Calculate Delta H for the reaction CH4(g)+NH3(g)-->HCN(g)+3H2(g) given,N2(g)+3H2(g)->2NH3(g) DeltaH=-91.8kj C(s)+2H2(g)->CH3(g)
1. 3 answers
2. asked by James
3. 4,961 views
In a constant-pressure calorimeter, 60.0 mL of 0.310 M Ba(OH)2 was added to 60.0 mL of 0.620 M HCl. The reaction caused the
1. 3 answers
2. asked by Kylee
3. 1,050 views
Determine the enthalpy of the following reaction.2M(s) + 3Cl2(g) ---> 2MCl3(s)
1. 4 answers
2. asked by Jessica
3. 2,426 views
Calculate the standard enthalpy change for the reaction2A+B⇌2C+2D Use the following data: Substance ΔH∘f (kJ/mol) A -247 B
1. 3 answers
2. asked by Marquel
3. 1,369 views
Consider these reactions where M represents a generic metal1. 2M(s) +6HCl(aq) --> 2MCl3(aq)+3H2(g) (deltaH)= -725.0 kj 2.
1. 3 answers
2. asked by anon
3. 2,228 views
When 10.00g of phosphorus is burned in O2(g) to form P4O10(s), enough heat is generated to raise the temperature of 2990g of
1. 3 answers
2. asked by John
3. 1,330 views
given the following data:S(s)+3/2 O2(g)->SO3(g) H=-395.2 kj 2SO2(g)+ O2(g)->2SO3(g) H=-198.2kj calculate H for the reaction
1. 3 answers
2. asked by rame
3. 2,874 views
1. Calculate the delta H for H2(g)+O2(g)=H2O2(g)Bond energies, kJ x mol^-1 H-H 432 H-O 459 O-O 207 O=O 494 I did:
1. 4 answers
2. asked by Anonymous
3. 3,580 views
Calculate ΔHrxn for the following reaction:C(s)+H2O(g)→CO(g)+H2(g) Use the following reactions and given ΔH values:
1. 3 answers
2. asked by Q
3. 1,186 views
Calculate delta H for this reaction:N2 + 3H2 --> 2NH3 I am given the bond dissociation energy for N-N (163 kJ/mol), H-H (436
1. 4 answers
2. asked by Emily
3. 2,584 views
Consider the following equations.N2H4(l) + O2(g) N2(g) + 2 H2O(l) ÄH = -622.2 kJ H2(g) + 1/2 O2(g) H2O(l) ÄH = -258.5 kJ H2(g)
1. 4 answers
2. asked by hannah
3. 762 views
. When a 28.7 g sample of KI dissolves in 60.0 g of water in a calorimeter, the temperature drops from 27.2oC to 13.2 oC .
1. 3 answers
2. asked by science girl
3. 709 views
For ethanol, C2H5OH, which is mixed with gasoline to make the fuel gasohol, H°f = -277.63 kJ/mol. Based upon data in Table 6.2,
1. 3 answers
2. asked by A
3. 1,111 views
27.0 mL of 1.00 M HClO4 are mixed with 27.0 mL of 1.00 M LiOH in a coffee cup calorimeter. The calorimeter constant is 28.1 J/C.
1. 3 answers
2. asked by Sue
3. 496 views
A 114g sample of sucrose undergoes incomplete combustion according to the reactionC12H22011 + 5O2 ---> 4C + 6CO + 2CO2 + 11H2O
1. 3 answers
2. asked by rick
3. 766 views
use thermochemical equations shown below to determine enthalpy for the reaction:H2CO3-->H2O+CO2 1) H2CO3 --> H2CO + O2 H; 224 KJ
1. 3 answers
2. asked by Brittany
3. 1,131 views
O3 + NO --> O2 + NO2 (all in gas state)Calculate the change in enthalpy for the reaction at room temp. using the following data
1. 4 answers
2. asked by Anonymous
3. 3,015 views
calculate the amount of heat evolved in the complete oxidation of 8.17g of Al at 25 degrees C and 1 atm pressure. change in H
1. 4 answers
2. asked by michelle
3. 799 views
Consider the following reaction: Zn(s) + 2HCl(aq) → ZnCl2(aq) + H2(g)0.103 g of Zn is combined with enough HCl to make 50.0 mL
1. 2 answers
2. asked by Kelly
3. 1,514 views
This is not going to be formatted we’ll because there is no subscript here.H2 + 1/2 O2 —> H2O -286kJ N2O5 + H2O —> 2HNO3
1. 2 answers
2. asked by Owen
3. 609 views
How do I calculate the amount of heat will be required to make 100.0kg of a compound, the molar enthalpy is -63kj/mol for the
1. 2 answers
2. asked by Sophia
3. 487 views
Calculate the DHrxn ofC57H110O6 (s) + O2(g) --> CO2(g) + H2O(l) with DHf. C57H110O6(s) -390.70 O2(g) 0 CO2(g) -393.5 H2O(l)
1. 10 answers
2. asked by Anonymous
3. 801 views
Calculate the DHrxn ofC57H110O6 (s) + O2(g) --> CO2(g) + H2O(l) with DHf. C57H110O6(s) -390.70 O2(g) 0 CO2(g) -393.5 H2O(l)
1. 2 answers
2. asked by Anonymous
3. 517 views
Calculate the DHrxn ofC6H12O6 (s) + O2 (g) --> CO2 (g) + H2O (l) with DHf. C6H12O6(s) -1260.04 O2(g) 0 CO2(g) -393.5 H2O(l)
1. 3 answers
2. asked by Anonymous
3. 578 views
Determine the missing values of deltaH in the diagram shown below^ | ^ N2O3(g) + 1/2 O2(g) (Enthalpy)| | ^ | | deltaH= +16.02 |
1. 10 answers
2. asked by Nancy
3. 829 views
Use standard enthalpies to calculate Triangle H for: 2C2H5OH (I) + O2 (g) -> 2CH3CHO (g) + 2H2O (I)
1. 1 answer
2. asked by Blair
3. 429 views
need to figure out how to calculate.the value of DeltaH for the reaction below is -72kj_____kj of heat are released when 1.0
1. 2 answers
2. asked by Debbie
3. 672 views
If 18 g of Kr initially at 0.5 bar and 18 L is brought to 0.49 bar and 5L, what is the overall change in enthalpy of this
1. 1 answer
2. asked by LaurenB
3. 366 views
The molar enthalpy of combustion of ethanol is -1234.8kJ/mol. How much water can be heated from 10.85 degrees celsius to 72.6
1. 3 answers
2. asked anonymously
3. 43 views

Enthalpy Calculation

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