first two stages the time dependence of the bubble radius is different for the cases when either Henry’s and Sievert’s laws are fulfilled, while during the third stage this distinction is no longer observed.

For both Henry’s and Sievert’s laws we obtain intervals within which the bubble radius changes on each stage, as well as time limits and conditions when the steady approximation is applicable. We show that, as the radius of the bubble increases, the steady condition becomes stricter; and, consequently, as a rule, the steady regime of a multistage bubble growth gradually gives way to the nonsteady one. We obtain analytical expression for the time when Laplace pressure influences on bubble growth vanishes and therefore substantiate the estimation of this time made in \[\[Grinin-Kuni-Gor\]\]. After this time passed the bubble growth reaches a self-similar regime \[\[Scriven-1959\]\]. We also analyze whether the steady approximation is applicable to the case of gas bubbles in magma described by Navon \[\[Navon\]\] and Chernov et al. \[\[Chernov-2004\]\] for large radius of a bubble (neglecting Laplace pressure). Besides that, we present the analytical description of bubble dissolution in the pure solvent for the Sievert’s solubility law, which was not presented before in literature.

Equilibrium 