Consider the reaction shown below. Use pKa values to determine which way the equilibrium lies. 
Definitions:
S-T Segment
A section of the electrocardiogram (ECG) tracing between the S wave and the start of the T wave, representing the interval between ventricular depolarization and repolarization.
T Wave
A component of the ECG that represents the repolarization of the ventricles in the heart cycle.
Depolarization
A reduction in the difference in electrical charge across a cell membrane, leading to activation of the cell.
ECG
Electrocardiogram, a test that measures the electrical activity of the heart to detect cardiac abnormalities.
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