For the reaction, NH3(g) + HCl(g) arrow NH4Cl(s) run at 95°C, ΔS = −284 J/K, and ΔH = −176 kJ. What is ΔG for this reaction?
(Points : 3)

−149,020 J

−91,368 J

−71, 488 J

104,336 J

Question

For the reaction, NH3(g) + HCl(g) arrow NH4Cl(s) run at 95°C, ΔS = −284 J/K, and ΔH = −176 kJ. What is ΔG for this reaction?
 (Points : 3)  
       
−149,020 J

        
−91,368 J

        
−71, 488 J

        
104,336 J

anonymous · Answer

Use the Gibbs free energy equation

anonymous · Answer

What would be T?

anonymous · Answer

temperature?

anonymous · Answer

The temperature is given to you in the problem, but remember to always work in Kelvin.

anonymous · Answer

I got 26,804 but that is not an option

anonymous · Answer

What did you get for your Temperature?

anonymous · Answer

I used 95 degrees C

anonymous · Answer

You need to convert 95 degrees C to Kelvin

anonymous · Answer

oh! okay hold on

anonymous · Answer

I got 104,378.6

anonymous · Answer

Hmm.. watch the negative signs, two negatives make a positive.

anonymous · Answer

$$\Delta G = \Delta H - T \Delta S$$
$$\Delta G = -176 - (95+273) (-284)$$

anonymous · Answer

You should get 104,336 J

anonymous · Answer

I did! I was just about to type that in! :+) Thank you!

anonymous · Answer

Glad I could help :)