Urgently CHEMISTRY (Thermodynamics) help needed here peeps!!!!! Please HELP!!!!!?

Malik B

New member
How to determine what molar enthalpy represents?

I have Chem problem. I have three equations. The equations are:

1: NaOH(s) --> Na+(aq) + OH-(aq)
2: NaOH(s) + HCl (aq) --> H2O (l) + NaCl (aq)
3: NaOH (aq) + HCl (aq) --> H2O (l) + NaCl (aq)

Main question:

Now in equation 1, ∆H1, ∆Hx represents the heat evolved as solid NaOH dissolves. Look the equation for reactions 2 and 3 and make similar statements as to what ∆H1 and ∆H3 represents.
 
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