HomeworkLib
Question

Question 19 3 Points Smelling salts work by releasing ammonia to the reaction (NH4)2CO3 (s) -->...

Question 19

3 Points

Smelling salts work by releasing ammonia to the reaction

(NH4)2CO3 (s) --> 2 NH3 (g) + CO2 (g) + H2O (l)

Use Hess' law to calculate the heat of reaction (in kJ) BLANK-1 (Give your answer to 3 significant figures, do not include units in your answer, do not use scientific notation)

ΔHof {(NH4)2CO3)} = +156 kJ/mol, ΔH0f {NH3} = -46.1 kJ/mol, ΔH0f {CO2} = -393.5 kJ/mol, ΔH0f {H2O}= -285.8 kJ/mol

  • BLANK-1
science   chemistry   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

Date Page RANKA HPreduck- 4H Meact an ginn uactien NH COCR) 2N 2xL-461) +(-393.5)+ (-285.8) 923.5 KLa AHoan

0 0
Add a comment
Know the answer?
Add Answer to:
Question 19 3 Points Smelling salts work by releasing ammonia to the reaction (NH4)2CO3 (s) -->...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • Balance the following equations and determine which type of reaction is occurring. 1. (NH4)2CO3 (s) →NH3+H2O+CO2...

    Balance the following equations and determine which type of reaction is occurring. 1. (NH4)2CO3 (s) →NH3+H2O+CO2 (g) 2. Zn (s) +H3C6H5O7 (aq) →Zn3(C6H5O7)2 (aq) + H2 (g) 3. Zn(C2H3O2)2 (aq) + Na3PO4 (aq) → NaC2H3O2 (aq) + Zn3(PO4)2 (s)

  • Part A Determine the enthalpy for this reaction: Ca(OH)2(s)+CO2(g)→CaCO3(s)+H2O(l) Express your answer in kilojoules...

    Part A Determine the enthalpy for this reaction: Ca(OH)2(s)+CO2(g)→CaCO3(s)+H2O(l) Express your answer in kilojoules per mole to one decimal place. ΔHrxn∘= kJ/mol Part B Consider the reaction Ca(OH)2(s)→CaO(s)+H2O(l) with enthalpy of reaction ΔHrxn∘=65.2kJ/mol What is the enthalpy of formation of CaO(s)? Express your answer in kilojoules per mole to one decimal place. ± Enthalpy Enthalpy H is a measure of the energy content of a system at constant pressure. Chemical reactions involve changes in enthalpy, ΔH, which can be measured...

  • Question 3 (6 points) What do you need to calculate to determine if this reaction is...

    Question 3 (6 points) What do you need to calculate to determine if this reaction is favorable at room temperature (25 °C)? Is the reaction product favorable? Substance CH() O2(g) CO2(e) H2O(g) H20(1) 2C2H6 (g) + 702 (g) à 4002 (+ 6H2O(1) Hºp (kJ/mol) Gºt (kJ/mol) S (J/K mol) -84.68 -32.89 229.5 205.0 -393.5 -394.4 213.7 -241.8 -228.6 188.8 -285 84 -237.19 69 94 OAH, no AG", no O o o o o o o AS®, yes Asº.no AG", yes...

  • Given the following Thermodynamic data: CO2(g) H2O(l) NH3(g) CO(NH2)2(s) DeltaHof (kJ/mol): -393.5 -285.85 -45.9 -333.2 So...

    Given the following Thermodynamic data: CO2(g) H2O(l) NH3(g) CO(NH2)2(s) DeltaHof (kJ/mol): -393.5 -285.85 -45.9 -333.2 So (J/K.mol): 214 70 193 105 (a) Calculate DeltaHo, DeltaSo, and DeltaGo at 25oC for the following reaction: CO2(g) + 2NH3(g) = CO(NH2)2(s) + H2O(l) (b) What is DeltaGo at 250oC? (Assume DeltaHo and DeltaSo do not change with temperature.) (c) Is the reaction spontaneous at each temperature? (Answer: (a) DeltaHo = -133.8 kJ; DeltaSo = -425 J/K; DeltaGo = -7.15 kJ; (b) DeltaGo =...

  • 13 Question (3 points) The enthalpy change for a chemical reaction is the sum of the...

    13 Question (3 points) The enthalpy change for a chemical reaction is the sum of the energy consumed in breaking bonds and the energy released during bond formation. One way to determine the overall energy change for a chemical reaction is to apply Hess's law to add together a group of reactions which can be arranged such that the chemical equations, when combined, give the overall equation we are trying to characterize Part 1 (1 point) Il See Periodic Table...

  • Question 4 (2 points) What is the value of AH in kJ for the overall reaction:...

    Question 4 (2 points) What is the value of AH in kJ for the overall reaction: 4 NO + 6 H20 + 4 NH3 +5 O2 given these reaction steps? 1. N2 + O2 + 2 NO AH = (1.97x10^2) kJ II. 2 NH3 + N2 + 3 H2 AH = (8.870x10^1) kJ III. 2 H2O → 2 H2 + O2 AH = (4.7900x10^2) kJ Enter your answer in scientific notation with 3 sig figs. Do not include any units...

  • Part A) What is ΔH∘rxn for the following chemical reaction? CO2(g)+2KOH(s)→H2O(g)+K2CO3(s) You can use the following...

    Part A) What is ΔH∘rxn for the following chemical reaction? CO2(g)+2KOH(s)→H2O(g)+K2CO3(s) You can use the following table of standard heats of formation (ΔH∘f) to calculate the enthalpy of the given reaction. Element/ Compound Standard Heat of Formation (kJ/mol) Element/ Compound Standard Heat of Formation (kJ/mol) H(g) 218 N(g) 473 H2(g) 0 O2(g) 0 KOH(s) −424.7 O(g) 249 CO2(g) −393.5 K2CO3(s) −1150kJ C(g) 71 H2O(g) −241.8kJ C(s) 0 HNO3(aq) −206.6 Express the standard enthalpy of reaction to three significant figures and...

  • 11 Question (3 points) @ See page 253 Use the data in the table below to...

    11 Question (3 points) @ See page 253 Use the data in the table below to answer the following questions: Compound CH3NH2() O2(g) CO2(g) NO2(g) H2011) A Hºf (kJ/mol) -23.0 0.0 -393.5 33.2 -285.8 1st attempt Part 1 (1.5 points) See Periodic Table See Hint Methanol and methylamine are both combustible fuels. How many grams of methylamine must be combusted to raise the temperature of 377 g of water from 15.0°C to 46.0°C? Assume that the transfer of heat from...

  • Question 15 2 Points How much energy is required to heat 44.72 g of H2O from...

    Question 15 2 Points How much energy is required to heat 44.72 g of H2O from 10.00 oC to 37.50 oC? (Heat capacity of liquid H2O = 75.37 J mol-1 K-1) (type in the numeric value in Joules - give your answer to 4 significant figures, do not include the units in your answer only the number, do not use scientific notation, do not include comma's) BLANK-1 BLANK-1

  • 1.A) What is the equilibrium constant for a reaction at temperature 31.5 °C if the equilibrium...

    1.A) What is the equilibrium constant for a reaction at temperature 31.5 °C if the equilibrium constant at 55.4 °C is 1.53? For this reaction, ΔrH = 20.2 kJ mol-1 . You have 5 attempts at this question. Remember: if you want to express an answer in scientific notation, use the letter "E". For example "4.32 x 104" should be entered as "4.32E4". 1B) What is the ΔrG° for the following reaction (in kJ mol-1)? N2(g) + O2(g) + Cl2(g)...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT