Lithium hydroxide is classified as an annhenius base since it dissociates into lithium cations and hydroxide an ions and Arrhenius bases are defined as a substance that dissociated into hydroxide anions (as well as cations) when in solution. I hope this helps. Let me know if anything is unclear.
![[H^{+}]= 10^{-pH} = 10^{-4.68}=2.09*10^{-5} [H^{+}] = 2.09*10^{-5}M](https://tex.z-dn.net/?f=%5BH%5E%7B%2B%7D%5D%3D%2010%5E%7B-pH%7D%20%3D%2010%5E%7B-4.68%7D%3D2.09%2A10%5E%7B-5%7D%0A%0A%5BH%5E%7B%2B%7D%5D%20%3D%202.09%2A10%5E%7B-5%7DM)
