Help me out because I attempted these and realized I did not solve them in KJ/Moles. How do you figure out change of enthalpy with the units kJ/moles?
My two reactions.
First balanced:
MgO (s) + 2 HCl (aq) --> MgCl2 (aq) + H2O (l)
Second balanced:
Mg (s) + 2 HCl (aq) --> MgCl2 (aq) + H2 (l)
I just need the individual delta H for each in KJ/moles.
Let's see, MgO mass: 1.010 g.
HCl mass: 80.376 g.
I also got 0.0251 moles of MgO.
Mg mass: 0.308 g.
HCl mass: 89.961 g.
3 answers
Back to my original question, if you show how you obtained that 8.39 perhaps I will know where you're going with this. I don't know where you get values for aqueous solutions when you don't know their concentrations. But I do know that the values are zero for Mg solid and H2 gas (but you show liquid). Surely you meant gas.
I'm sorry. I'm quite confused too. Where are you getting 8.39? I have no idea what is going on anymore. This lab got too convoluted for my taste. No worries, thanks for your help anyways.
Three hours ago and an hour later you posted this current post. Your original post is here. https://www.jiskha.com/questions/1852512/help-me-out-because-i-attempted-these-and-realized-i-did-not-solve-them-in-kj-moles-how
That's where I found the 8.39 value I quoted. I asked there about providing information about how you obtained the 8.39 kJ but no response. Then you posted this current saying you don't know anything about that. I'm just trying to find out how and where you obtained that number. Hopefully then I can figure out where you are going with this problem. I can't help if I don't get information.
That's where I found the 8.39 value I quoted. I asked there about providing information about how you obtained the 8.39 kJ but no response. Then you posted this current saying you don't know anything about that. I'm just trying to find out how and where you obtained that number. Hopefully then I can figure out where you are going with this problem. I can't help if I don't get information.
1 answer