import math


def henry_T(ebulition_T, T):
    """
    Return Henry constant [] from ebulition temperature
    source : (Mishra and Kumar, 2015)

    Parameters
    ----------
    ebulition_T : Ebulition temperature [K] (overpredicted above 280°C)
    T : Temperature [K]


    """
    if ebulition_T > (280+273.15):
        print("Ebulition temperature for computing henry above 280 °C !")

    return math.exp(6.3-10.3*(ebulition_T/T))