Homework Answers
Answer -
Given,
G
= -625.6 kJ
Moles of SiCl4=25 mol
Enthalpy change = ?
SiCl₄ (g) + 2Mg (s) → 2MgCl₂ (s) + Si (s)
Mole of Enthalpy change = -625.6 kJ/ mol
So, For 25 mole of Enthalpy change = -625.6 kJ/mol * 25 mol
Enthalpy change = -15640 kJ or -1.5 *104 kJ [Answer]
Add Answer to:
18. c Sand is converted to pure silicon in a three step process. The third step...
I understand if reaction is reversed, you change the sign but how to you know to...
I understand if reaction is reversed, you change the sign but how to you know to reverse the reaction? In the problem, Sand is converedto pure silicon in a 3 step process. The final step in this process is as follows: SiCl4 (g) + 2Mg (s) --> 2MgCl (s) + Si (s) ChangeHrxn=6256kj/mol What is the enthalpy change if 25.0 mol of silicon tetrachloride is converted to elemental silicon? I get the answer by 25 mol SiCl4 x 6256kj/mol=15640kj but...
#9-12 A simple step by step process for all please Thank you! a) -2.81 x 103...
#9-12
A simple step by step process for all please
Thank you!
a) -2.81 x 103 kJ b) -25.8 k c15.6 k d) -42.6 k e) 25.8 k Given the thermochemical equation calculate AHo for the following reaction: 9. 2NOg) + 028) 2NO2g) 솨1°=-114.0 kJ NOg) NO(g) 1/2 02(g) a) +114.0 k b) +57.0 k c) -114 kJ d) -57.0k) e) +128 k] 10. The standard enthalpy change for the following reaction is -72.8 kJ. What is the standard enthalpy...
Problem 3 please I'm not understanding. Please tell how you got the answer step by step...
Problem 3 please I'm not understanding. Please tell how
you got the answer step by step and the equation used !
Thanks
Date 1. Calculate AE for a system undergoing an endothermic process in which 25.3 kJ of heat flows and where 4.6 kJ of work is done on the system. 2. Calculate the work associated with the compression of a gas from 52 L. to 33 L at a constant external pressure of 16 atm. 3. How many grams...
3. Impure nickel, refined by smelting sulfide ores in a blast furnace, can be converted into...
3. Impure nickel, refined by smelting sulfide ores in a blast furnace, can be converted into metal from 99.90% to 99.99% purity by the Mond process. The primary reaction involved in the Mond process is: (-25 points total; -5 points each) Ni(s) + 4 CO(g) Ni(CO)4(8) a. The spontaneity of the above reaction is temperature dependent. Given the following values and those in the Appendix in your book, calculate Hº and ASº for the above reaction. [AH °(Ni(CO).) = -607...
only questions number: #3,6,8,16,19,22 Δι CH 122 - Practice Problems for Chapter 12 Do NOT use...
only questions number: #3,6,8,16,19,22
Δι CH 122 - Practice Problems for Chapter 12 Do NOT use this problem set solely as test preparation. This problem set does NOT cover everything that we have discussed in class. You will still need to study class materials in order to do well on the learning assessment. 1. Of the following all are valid units for a reaction rate except A. moll B. M/S C. molhr D.g's E.molle 2. Which one of the following...
(6 pts.) 1. The air pressure in the inner tube of a tire on a typical...
(6 pts.) 1. The air pressure in the inner tube of a tire on a typical racing bike is held at a pressure of 115 psi (pounds! per square inch). Convert this pressure to atm and mm Hg. (3 pts. each) The atmospheric pressure is 0.978 atm. Determine the pressure of the enclosed gas in each of the cases depicted below. Gas Gas (6 pts.) 3. A 5.90 L bottle contains 1070 g of oxygen at 25.0°C. Calculate the pressure...
4. Only ideal processes can be thermodynamically "reversible." Why can rear proce y can real process...
4. Only ideal processes can be thermodynamically "reversible." Why can rear proce y can real processes not be? 5. Consider the following reactions. (Note: if this were an exam we would give you an excerpt on tabular data from Appendix 4 (Table A4.3). 2Fe(s) + 3Cla(s) 2FeCl(s) N2H4(8) + H2(g) + 2NH3(g) (a) Would you expect the entropy change for the above reaction to be >0, <0, or no (small)? Justify your answer. (d) Would you expect the entropy change...
#9-12
A simple step by step process for all please
Thank you!
a) -2.81 x 103 kJ b) -25.8 k c15.6 k d) -42.6 k e) 25.8 k Given the thermochemical equation calculate AHo for the following reaction: 9. 2NOg) + 028) 2NO2g) 솨1°=-114.0 kJ NOg) NO(g) 1/2 02(g) a) +114.0 k b) +57.0 k c) -114 kJ d) -57.0k) e) +128 k] 10. The standard enthalpy change for the following reaction is -72.8 kJ. What is the standard enthalpy...
Problem 3 please I'm not understanding. Please tell how
you got the answer step by step and the equation used !
Thanks
Date 1. Calculate AE for a system undergoing an endothermic process in which 25.3 kJ of heat flows and where 4.6 kJ of work is done on the system. 2. Calculate the work associated with the compression of a gas from 52 L. to 33 L at a constant external pressure of 16 atm. 3. How many grams...
3. Impure nickel, refined by smelting sulfide ores in a blast furnace, can be converted into metal from 99.90% to 99.99% purity by the Mond process. The primary reaction involved in the Mond process is: (-25 points total; -5 points each) Ni(s) + 4 CO(g) Ni(CO)4(8) a. The spontaneity of the above reaction is temperature dependent. Given the following values and those in the Appendix in your book, calculate Hº and ASº for the above reaction. [AH °(Ni(CO).) = -607...
only questions number: #3,6,8,16,19,22
Δι CH 122 - Practice Problems for Chapter 12 Do NOT use this problem set solely as test preparation. This problem set does NOT cover everything that we have discussed in class. You will still need to study class materials in order to do well on the learning assessment. 1. Of the following all are valid units for a reaction rate except A. moll B. M/S C. molhr D.g's E.molle 2. Which one of the following...
(6 pts.) 1. The air pressure in the inner tube of a tire on a typical racing bike is held at a pressure of 115 psi (pounds! per square inch). Convert this pressure to atm and mm Hg. (3 pts. each) The atmospheric pressure is 0.978 atm. Determine the pressure of the enclosed gas in each of the cases depicted below. Gas Gas (6 pts.) 3. A 5.90 L bottle contains 1070 g of oxygen at 25.0°C. Calculate the pressure...
4. Only ideal processes can be thermodynamically "reversible." Why can rear proce y can real processes not be? 5. Consider the following reactions. (Note: if this were an exam we would give you an excerpt on tabular data from Appendix 4 (Table A4.3). 2Fe(s) + 3Cla(s) 2FeCl(s) N2H4(8) + H2(g) + 2NH3(g) (a) Would you expect the entropy change for the above reaction to be >0, <0, or no (small)? Justify your answer. (d) Would you expect the entropy change...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 10 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 10 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 10 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 10 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 10 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 10 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 10 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 10 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 10 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 10 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 10 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 10 months ago