Homework Answers
8.
Activation energy of Backward reaction is given as
Eactivated complex (Energy of activated complex i.e peak of curve)=300kJ
EProduct(Energy of product)=200kJ
Eactivated complex - EProduct =300-200
=100kJ
Enthalpy of reaction for backward reaction will be
Ereactant = 150 kJ
Eproducts =200 kJ
Ereactant-Eproducts
=150-200 kJ
=-50kJ
Correct option will be C
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CHEMI21 Quiz #5 Show your work and circle your answer. Name: 1. The reaction A+B → AB has a AH -130 kJ and an activation energy (E) of 50 kJ. Use this information to complete the following: a. On the back side, sketch the energy vs. progress of reaction graph approximately to scale. For full credit label the axes, reactants, products, activation energy, and AH on your graph. b. Write the reaction...
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questions 32,33, and 34. i need help with them asap.
and
35
A 500.0-g sample of an element, at 195°C is dropped into an ice-water mixture. 1095 gofioevoelka und an ice-water mixture remains. Calculate the specific locat of the elencia, mod determine which element it is. В. Ва A. Zn C. Po D. Ag 33. What is the final temperature, in °C, when 20.0 g of water at 80°C is mixed with 200 g of water 1292 A. 12°C B....
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i need help with both , thank you
CHEMI21 Quiz #5 Show your work and circle your answer. Name: 1. The reaction A+B → AB has a AH -130 kJ and an activation energy (E) of 50 kJ. Use this information to complete the following: a. On the back side, sketch the energy vs. progress of reaction graph approximately to scale. For full credit label the axes, reactants, products, activation energy, and AH on your graph. b. Write the reaction...
The specific heat of iron is 0.450 J/g°C
1127 Chapter 6 Discussion Problems 1. How much energy must be transferred to raise the temperature of a cup of coffee (250 mL) from 20.5°C 10 95.6°C? Assume density and specific heat is the same as Water 4.16 Ig/ml 2. An 38.5 g piece of iron with temperature 78.8°C is placed in a beaker containing 244 g of water at 18.8°C. When thermal equilibrium is reached, what is the final temperature? Assume...
Need help with #6,7&9 to make sure I
did it right. Will rate high if it is correct! Thank you.
6. Use given data to calculate the standard free- energy change for the reaction Pa(g) + 6 Cl2(g) → 4 PC13(g) at 298 K. (ii) What is AGº for the reverse of this reaction? PA(g) Cl2(g) PC13(g) 24.4 -299.6 kJ/mol AGE 9. Calculate AG at 298 K for a mixture of 2.0 atm N2, 3.0 atm H2, and 0.50 atm...
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need help ASAP
Extra Credit Worksheet: Chapter 6-7 1. Ammonia (NH) burns in the presence of a copper catalyst to form nitrogen gas. 4NH,(?) + 30,(6) 2N,() + 6H2Og AH' = -1267 kJ How much heat would evolve when burn 35.80 g of ammonia burns? (1 point) (1 point) 2. Calculate the heat of reaction for PbCl2(s) + Cl2(g) → PbC14(1) Using the following set of reactions: Pb(s) + Cl2(g) → PbC1z(s); AH = -359.4 k) Pb(s) + 2C12() PbC140);...
): 4,7 10. Given the thermochemical equation Cal) 02/2) + H12) - Ca(OH --49345 kJ/mol-nun find AH for the following reaction Ca(OH)20) -- Calo) + O2(g) + H2(8) a.986.9 kJ/mol-pan b. -986.9 kJ/mol-nxn C.-139 kJ/mol-ran d. -2320 kJ/mol-nun c.-39.7 kJ/mol-ran 11. A hot piece of iron is dropped into a beaker containing colder water. Which of the following statements is/are CORRECT? 1. Energy is transferred as heat from the iron to the water. 7 Thermal equilibrium is attained when the...
need help with 6, 7, and 8 can seem to understand why these
are the answer
What is the Gibbs free energy of the following reaction? C3H8(g) + 10 O2(g) + 3 CO2(g) + 4H2O(g) a) -599.44 kJ/mol (6) 2073.88 kJ/mol c) -2120.86 kJ/mol d)-4171.24 kJ/mol Which of matter and energy is transferable in an insulated system? a) matter b) energy c) matter and energy d) neither If 50. g of iron is 90°C and is added to 100 g...
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