In: Physics
In a constant‑pressure calorimeter, 50.0 mL 50.0 mL of 0.800 M H2SO40.800 M H2SO4 was added to 50.0 mL50.0 mL of 0.370 M NaOH.0.370 M NaOH.
The reaction caused the temperature of the solution to rise from 23.40 ∘C23.40 ∘C to 25.92 ∘C.25.92 ∘C. If the solution has the same density and specific heat as water (1.00 g/mL1.00 g/mL and 4.184 J/(g⋅°C),4.184 J/(g⋅°C), respectively), what is Δ?ΔH for this reaction (per mole of H2OH2O produced)?
Assume that the total volume is the sum of the individual volumes.
Δ?=______ kj/mol H20
Consider these reactions, where M represents a generic metal.
2M(s)+6HCl(aq)⟶2MCl3(aq)+3H2(g)Δ?1=−889.0 kJ2M(s)+6HCl(aq)⟶2MCl3(aq)+3H2(g)ΔH1=−889.0 kJ
HCl(g)⟶HCl(aq) Δ?2=−74.8 kJHCl(g)⟶HCl(aq) ΔH2=−74.8 kJ
H2(g)+Cl2(g)⟶2HCl(g) Δ?3=−1845.0 kJH2(g)+Cl2(g)⟶2HCl(g) ΔH3=−1845.0 kJ
MCl3(s)⟶MCl3(aq) Δ?4=−142.0 kJMCl3(s)⟶MCl3(aq) ΔH4=−142.0 kJ
Use the given information to determine the enthalpy of the reaction
2M(s)+3Cl2(g)⟶2MCl3(s)2M(s)+3Cl2(g)⟶2MCl3(s)
Δ?=_______ kj