1. The problem statement, all variables and given/known data Suppose the reaction system UO2(s) +4HF(g) <-> UF4(g) +2H2O(l) is sealed in a container and allowed to equilibrate at a particular temperature. Explain what happens to the nature of each substance if you: a. remove some UO2 from the system b. remove all UO2 from the system 2. Relevant equations 3. The attempt at a solution I know that UO2 is solid and that it does not affect the equilibrium but in my answers it says that a) will have no effect while b) will increase [HF] and decrease [UF4].....why is that? I thought that all solids will have no effect no matter how much you take out..Thanks.