The reaction NH3(g)+HCl(g)→NH4Cl(s)\mathrm{NH_3(g) + HCl(g)…
The reaction NH3(g)+HCl(g)→NH4Cl(s)\mathrm{NH_3(g) + HCl(g) \rightarrow NH_4Cl(s)}NH3(g) + HCl(g) → NH4Cl(s) is spontaneous at room temperature. Using the thermodynamic data below, determine the temperature above which the reaction is no longer spontaneous. Substance S∘S^\circ (J·mol⁻¹·K⁻¹) ΔHf∘\Delta H_f^\circ (kJ·mol⁻¹) NH₃(g) 193.0 –46.3 HCl(g) 187.0 –92.3 NH₄Cl(s) 94.56 –315.39
Read DetailsA buffer solution is prepared by mixing 0.400 mol of acetic…
A buffer solution is prepared by mixing 0.400 mol of acetic acid (CH₃COOH) and 0.300 mol of sodium acetate (CH₃COONa) in enough water to make 1.00 L of solution. The acid dissociation constant for acetic acid is Ka=1.8×10^5. What is the pH of the buffer solution?
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