# Concept question about entropy of surroundings

By Clausius's definition $$dS_{surr} = \frac{\delta q_{rev}}{T}$$ but does this mean $$dS_{surr} = \frac{\delta q}{T}$$ where $\delta q$ is the infinitesimal heat absorbed by the surrounding in any process (may be reversible or irreversible for the system) because the surrounding is always at equilibrium?

• Ok got it. Thank you! I really need to make sure I'm clear about this point. Since if this is true then I can deduce the equations for $\Delta A$ and $\Delta G$ directly from the equation $dS_{universe}\geq 0$. – snsunx Jan 24 '16 at 2:11