Ive created the equation, but my math or units keep messing up. Please help! Thi

Question

Ive created the equation, but my math or units keep messing up. Please help!

This is the equation of a straight line. Plug in the necessary values you calculated in question 2 for Erxn, ?Vrxn, and ?Srxn.

Rewrite your equation here. Its when Graphite and Diamonds are in equilibrium. It was given as Grxn = 0 = Erxn + (P ×Vrxn)(0.1 J/cm3-bar) - (T ×Srxn)

My values were: Erxn= -2.19x10^3 J/Mol

Vrxn= 1.881cm^3/mol

Srxn=3.36 J/K Mol

Grxn=-2.19x10^3J/Mol

This is the equation I plugged everything into: Grxn = 0 =-2.19x10^3K/mol + (P × 1.88 cm^3/mol)(0.1 J/cm3-bar) - (298 K× 3.36J/Kmol)

Im trying to solve for Pressure and then write my equation in y=mx+b format and I keep messing up. HELP!

I need it written in a y=mx+b format so I can graph. Pressure vs. Temperature Write your equilibrium equation here in y = mx + b format, or P = (slope)T + y-intercept

Explanation / Answer

Given, Grxn = 0 = -2.19x10^3J/mol + (P × 1.88 cm^3/mol)(0.1 J/cm3-bar) - (298 K× 3.36J/Kmol).

And given that :

Erxn= -2.19x10^3 J/Mol

Vrxn= 1.881cm^3/mol

Srxn=3.36 J/K Mol

Now, 2.19x103 + (P×1.88)(0.1) - (298×3.36) = 0

i.e., (P×0.188) = (298×3.36) - 2.19x103

i.e., P = -1188.72/0.188

i.e., P = -6322.98

Therefore, the required pressure is 6322.98 bar.

And, the required equation is : 2.19x103 + (P×1.88)(0.1) - (T×3.36) = 0

i.e., P×0.188 = T×3.36 - 2.19×103

i.e., P = (3.36/0.188)×T - (2190/0.188)

i.e., P = 17.87×T - 11648.94

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