1 answer

6. Calculate AH Reaction for the Reaction: N2H4 + 2N2O5 + 2HNO3 + 2NO2 + 2...

Question:

6. Calculate AH Reaction for the Reaction: N2H4 + 2N2O5 + 2HNO3 + 2NO2 + 2 NH Using the following equations: H2 + 2N2 + 5022H
7. Calculate the AHReaction for the reaction 2H2(g) + CO(g) → CH3OH(1) Using the following equations: CH3OH() + O2(g) → C(s)
6. Calculate AH Reaction for the Reaction: N2H4 + 2N2O5 + 2HNO3 + 2NO2 + 2 NH Using the following equations: H2 + 2N2 + 5022HNO3 + 2NO2 N2H4 + 2NH + H2 2N205 2N2 + 502 AH = -202 kJ AH = +567 kJ AH = +22.6 kJ
7. Calculate the AHReaction for the reaction 2H2(g) + CO(g) → CH3OH(1) Using the following equations: CH3OH() + O2(g) → C(s) + 2H2O() C(s) + 02 (9) — CO(g) H2(g) + + O2(g) → H2O(1) AH = -333.00 kJ AH = -111.52 kJ AH = -285.83 kJ 8. For the reaction: Ca(OH)2(s) + CO2(g) - CaCO3(s) + H2O(1) a. Balance the reaction b. Use the following standard enthalpies to calculate the enthalpy change. Ca(OH)2 = -986.09 kJ CO2(g) = -393.509 ho H2O() = -286 ho CaCO3 = -1206.92 k

Answers

6)

Lets number the reaction as 0, 1, 2, 3 from top to bottom

required reaction should be written in terms of other reaction

This is Hess Law

required reaction can be written as:

reaction 0 = +1 * (reaction 1) +1 * (reaction 2) +1 * (reaction 3)

So, ΔHo rxn for required reaction will be:

ΔHo rxn = +1 * ΔHo rxn(reaction 1) +1 * ΔHo rxn(reaction 2) +1 * ΔHo rxn(reaction 3)

= +1 * (-202.0) +1 * (567.0) +1 * (22.6)

= 387.6 KJ

Answer: 387.6 KJ

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