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–6. –8. Uraninite. ++++. –10. ++++. U. log a U. –12. +++. UOH. -. U(OH). 5. ++. U(OH). 2. –14. +. U(OH). 3. U(OH). 4. 25°C. –16. 0. 2. 4. 6. 8. 10. 12. 14. pH. Log K = -3.5. Log K = -4.6383.

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–16

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  1. –6 –8 Uraninite ++++ –10 ++++ U log a U –12 +++ UOH - U(OH) 5 ++ U(OH) 2 –14 + U(OH) 3 U(OH) 4 25°C –16 0 2 4 6 8 10 12 14 pH Log K = -3.5 Log K = -4.6383

  2. Use the “Alter log Ks” option to adjust the equilibrium constant for a reaction without permanently modifying a thermo dataset.

  3. Config → Alter Log Ks… Top row values are preserved in the dataset. Temporarily adjust the reaction’s log K at any principal temperature, then click Apply. add → Mineral… → Uraninite

  4. The stability field for Uraninite has decreased. Original diagram

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