how do you find delta change H Solution Rearrange equations in order to cancel u

Question

Explanation / Answer

Rearrange equations in order to cancel unwanted compounds: Change sign when reactions are reversed: 1/2(2NH3(g) --> N2(g) + 3H2(g) H(rxn)= 91.8kJ) NH4Cl(s) --> NH3(g) + HCl(g) H(rxn)= 176.2kJ 1/2(N2(g) + 4H2(g) +Cl2(g)--> 2NH4Cl(s) H(rxn)= -628.8kJ) ______________________________________… NH3(g) --> 1/2N2(g) + 3/2H2(g) H(rxn)= 45.9kJ) NH4Cl(s) --> NH3(g) + HCl(g) H(rxn)= 176.2kJ 1/2N2(g) + 2H2(g) + 1/2Cl2(g) --> NH4Cl(s) H(rxn)= -314.4kJ All items the same on opposite sides of the arrow cancel and you are left with the following: ______________________________________… 1/2H2(g) + 1/2Cl2(g) --> HCl(g) H(rxn)= -92.3kJ

Related Questions

Navigate

• Browse (All)
• Browse H
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.