Carbon dioxide dissolves in water to form carbonic acid. Estimate the thermodynamic equilibrium constant for this reaction using the AG; values in the table. Substance AG; (kJ/mol) H,CO, (aq) H,O(1) Co,(g) -616.1 -237.1 -394.4 K = .002 Carbonic acid then ionizes in water (Ka1 = 4.5 × 10-7). Ignoring K22, estimate K for the overall process by which CO, and H,O form H* and HCO,. К- Incorrect What is the pressure of CO, in equilibrium with carbonated water at 25 °C and pH = 4.78? Рсо, atm Incorrect

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Carbon dioxide dissolves in water to form carbonic acid. Estimate the thermodynamic equilibrium constant for this reaction
using the AG; values in the table.
Substance
AG; (kJ/mol)
H,CO, (aq)
-616.1
H, O(1)
-237.1
CO,(g)
-394.4
K =
.002
Carbonic acid then ionizes in water (Kal
= 4.5 x 10-7). Ignoring Ka2, estimate K for the overall process by which CO, and
H,0 form H* and HCO, .
К —
Incorrect
What is the pressure of CO, in equilibrium with carbonated water at 25 °C and pH = 4.78?
Pco,
atm
Incorrect
Transcribed Image Text:Carbon dioxide dissolves in water to form carbonic acid. Estimate the thermodynamic equilibrium constant for this reaction using the AG; values in the table. Substance AG; (kJ/mol) H,CO, (aq) -616.1 H, O(1) -237.1 CO,(g) -394.4 K = .002 Carbonic acid then ionizes in water (Kal = 4.5 x 10-7). Ignoring Ka2, estimate K for the overall process by which CO, and H,0 form H* and HCO, . К — Incorrect What is the pressure of CO, in equilibrium with carbonated water at 25 °C and pH = 4.78? Pco, atm Incorrect
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