Nitrogen and oxygen react at high temperatures. (a) Write the expression for the equilibrium constant (K c ) for the reversible reaction N 2 ( g ) + O 2 ( g ) ⇌ 2NO ( g ) nH = − 181 kJ (b) What will happen to the concentrations of N 2 ,O 2 , and NO at equilibrium if more O 2 is added? (c) What will happen to the concentrations of N 2 , O 2 , and NO at equilibrium if N 2 is removed? (d) What will happen to the concentrations of N 2, O 2, and NO at equilibrium if NO is added? (e) What will happen to the concentrations of N 2 ,O 2 , and NO at equilibrium if the volume of the reaction vessel is decreased? (f) What will happen to the concentrations of N 2 ,O 2 , and NO at equilibrium if the temperature of the system is increased?
Nitrogen and oxygen react at high temperatures. (a) Write the expression for the equilibrium constant (K c ) for the reversible reaction N 2 ( g ) + O 2 ( g ) ⇌ 2NO ( g ) nH = − 181 kJ (b) What will happen to the concentrations of N 2 ,O 2 , and NO at equilibrium if more O 2 is added? (c) What will happen to the concentrations of N 2 , O 2 , and NO at equilibrium if N 2 is removed? (d) What will happen to the concentrations of N 2, O 2, and NO at equilibrium if NO is added? (e) What will happen to the concentrations of N 2 ,O 2 , and NO at equilibrium if the volume of the reaction vessel is decreased? (f) What will happen to the concentrations of N 2 ,O 2 , and NO at equilibrium if the temperature of the system is increased?
1.
How many neighbors does the proton that produces the multiplet below have?
2.
3.
اللـ
Draw a partial structure from the multiplet below. (The integration of the multiplet is 6)
M
Using the additivity constants found in appendix G of your lab manual, calculate the approximate chemical
shifts of the protons indicated below. (Show your work!!!)
B
A
Br
SH
1) Suppose 0.1 kg ice at 0°C (273K) is in 0.5kg water at 20°C (293K). What is the change in entropy of the ice as it melts at 0°?
To produce the original "water gas" mixture, carbon (in a combustible form known as coke) is reacted with steam: 131.4 kJ + H20(g) + C(s) → CO(g) + H2(g) From this information and the equations in the previous problem, calculate the enthalpy for the combustion or carbon to form carbon dioxide.
kindly show me how to solve this long problem. Thanks
4.
An 'H-NMR of a compound is acquired. The integration for signal A is 5692 and the integration for signal
B is 25614. What is the simplest whole number ratio of protons for signals A and B? (Show your work!!!)
5.
Assign the carbons in the NMR below as either carbonyl, aromatic, or alkyl.
200
150
100
50
ō (ppm)
1
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