Mixed transport control in gas-liquid metal reactions

The calculation of the rate of gas-liquid metal reactions of the type A(gas) +B(dissolved) =AB(gas) is described, assuming that the rates are controlled by transport. Mixed control is shown to occur in a number of important gas-liquid metal reactions. This leads to slow rates which may be erroneously ascribed to control by a chemical step. The definition of parameters which can be calculated to indicate without ambiguity whether control is mixed or lies in the gas or liquid phases is discussed.