1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
zhenek [66]
3 years ago
8

Making methanol the element hydrogen is not abundant in nature, but it is a useful reagent in, for example, the potential synthe

sis of the liquid fuel methanol from gaseous carbon monoxide: $$2h2​(g)+co(g) ch3​oh(g) δh°f, kj/mol δs°f, j/mol·k h2(g) 0 130.6 co(g) -110.5 197.7 ch3oh(g) -238.7 126.8 1st attempt see hintsee periodic table this reaction is spontaneous at temperatures lower than:
Chemistry
1 answer:
stealth61 [152]3 years ago
5 0
ΔG⁰ = ΔH⁰ - TΔS
ΔH⁰ = Hf,(CH₃OH) - Hf,(CO) = -238.7 + 110.5 = -128.2 kJ/mol
ΔS = S(CH₃OH) - S(CO) - 2S(H₂) = 126.8 - 197.7 - 2 x 130.6 = -332.1 J/mol.K
So 
ΔG⁰ = - 128200 + 332.1 T
For the reaction to be spontaneous:
ΔG⁰ < 0
So: -128200 + 332.1 T < 0
332.1 T < 128200
T < 386.028 K
You might be interested in
Which of the following shows a periodic pattern?
kolbaska11 [484]
Out of the following choices, the one that shows a periodic pattern is "the mother takes her medication everyday at 7." 
4 0
3 years ago
Determine the correct name for the compound MG3N2
SSSSS [86.1K]
Mg3N2 is Magnesium nitride
5 0
2 years ago
Which of the following is most likely to occur if the organ labeled 1 stops working correctly?
Dafna1 [17]

theres no link or pictureeee

6 0
3 years ago
How can I explain that orange juice is a homogeneous mixture ?
Masteriza [31]

Answer: It is usually separated from tea leaves by filtration. B Because the composition of the solution is uniform throughout, it is a homogeneous mixture. A Orange juice contains particles of solid (pulp) as well as liquid; it is not chemically pure.

7 0
3 years ago
If 21.00 mL of a 0.68 M solution of C6H5NH2 required 6.60 mL of the strong acid to completely neutralize the solution, what was
Andru [333]

Answer:

pH = 2.46

Explanation:

Hello there!

In this case, since this neutralization reaction may be assumed to occur in a 1:1 mole ratio between the base and the strong acid, it is possible to write the following moles and volume-concentrations relationship for the equivalence point:

n_{acid}=n_{base}=n_{salt}

Whereas the moles of the salt are computed as shown below:

n_{salt}=0.021L*0.68mol/L=0.01428mol

So we can divide those moles by the total volume (0.021L+0.0066L=0.0276L) to obtain the concentration of the final salt:

[salt]=0.01428mol/0.0276L=0.517M

Now, we need to keep in mind that this is an acidic salt since the base is weak and the acid strong, so the determinant ionization is:

C_6H_5NH_3^++H_2O\rightleftharpoons  C_6H_5NH_2+H_3O^+

Whose equilibrium expression is:

Ka=\frac{[C_6H_5NH_2][H_3O^+]}{C_6H_5NH_3^+}

Now, since the Kb of C6H5NH2 is 4.3 x 10^-10, its Ka is 2.326x10^-5 (Kw/Kb), we can also write:

2.326x10^{-5}=\frac{x^2}{0.517M}

Whereas x is:

x=\sqrt{0.517*2.326x10^{-5}}\\\\x=3.47x10^-3

Which also equals the concentration of hydrogen ions; therefore, the pH at the equivalence point is:

pH=-log(3.47x10^{-3})\\\\pH=2.46

Regards!

6 0
2 years ago
Other questions:
  • Calculate the pressure of O2 (in atm) over a sample of NiO at 25.00°C if ΔG o = 212 kJ/mol for the reaction. For this calculatio
    7·1 answer
  • These two beakers represent solutions of HCl and NaOH. Describe a third beaker showing the ions that remain after the reaction h
    15·1 answer
  • Which of the following is an example of a behavioral adaptation
    7·2 answers
  • Which of the following statements regarding isotopes is TRUE?
    8·1 answer
  • Join me in among us if u want :)<br> sever code-XXILYQ
    8·2 answers
  • What is the molar mass of CO2
    10·1 answer
  • Which is greater , 3 moles of sulfur or 2 moles of iron sulphide
    9·2 answers
  • Please help fast what is this molecule called
    14·1 answer
  • Room temperature is usually considered to be 25°C. What is that in kelvins?
    7·1 answer
  • Why does an aerial require two explosions of black powder
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!