How does the law of conservation of mass apply to this reaction: C2H4 + O2 → H2O + CO2?
AX5E0 - trigonal bipyramidal - zero lone pairs;
AX4E1 - seesaw - 1 lone pair;
AX3E2 - T-shaped - 2 lone pairs;
AX2E3 - linear - 3 lone pairs;
The only option that matches is trigonal bipyramidal.
The value of heat of the reaction for the given chemical reaction is equal to -175.91 kJ.
Change in enthalpy of the reaction is calculated by substracting the total sum of enthalpies of reacatnts from the the total sum of the enthalpies of products.
Given chemical reaction is:
NH₃(g) + HCl(g) → NH₄Cl(s)
According to the equation total enthalpy of the reaction calculated as:
ΔHrxn = ΔfH(NH₄Cl) - [(ΔfH(NH₃) + ΔfH(HCl)]
On putting values from the question to the equation, we get
ΔHrxn = -314.4 kJ/mol - [-46.19 kJ/mol + (-92.30 kJ/mol)]
ΔHrxn = -314.4 kJ + 138.49 kJ.
ΔHrxn = -175.91 kJ
Hence the heat of the reaction is -175.91 kJ.
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