# What happens when you mix a salt with a strong base? [duplicate]

This doesn't come off from a question but it came to my mind. Take an example of $$NH_4Cl$$ as the salt and $$NaOH$$ as the strong base. What would happen to the pH for example? I'm guessing that the salt would dissociate $$NH_4 Cl\rightarrow NH_4^+ + Cl^-$$ $$c_0 \ \ \ \ \ c_0 \ \ \ \ c_0$$ and then the $$NH_4$$ would hidrolise like this: $$NH_4^+ +H_2O\rightarrow NH_3+H_3O^+$$ and then the hydroxide sodium would dissociate into hidroxide to find the pH? Not sure what would happen

• You can format chemical substances and reactions using "mhchem" notation. For instance write $\ce{NH+4 +H2O->NH3 + H3O+}$ as \$\ce{NH+4 +H2O->NH3 + H3O+}\$. Commented Oct 21, 2022 at 14:59
• Also, please browse the site for similar questions. What you describe (as the answer correctly points out) is the reaction of a weak acid with a strong base. Use the search bar to start a search: chemistry.stackexchange.com/… Commented Oct 21, 2022 at 15:00
• Convenient reference for text/formula formatting: Notation basics / Formatting of math/chem expressions / upright vs italic // For more: Math SE MathJax tutorial. // Not to be applied in CH SE titles. Commented Oct 22, 2022 at 7:41

Sodium hydroxide would dissociate into sodium cation and hydroxide anion. Hydroxide anion would react with both $$\ce{NH4+}$$ cation and $$\ce{H+}$$ cation because of their strength ($$\ce{OH-}$$ is a strong base).
So as you can see $$\ce{NH4Cl}$$ is an acid salt because the solution that remains after its addition into water contains $$\ce{H+}$$ produced from the hydrolysis of ammonium cation. Therefore if you add NaOH that is a strong base it will end up as a basic solution. In spite of the final solution you can calculate both pOH and pH when information are provided.
• Please check spelling, correct use of chemical nomenclature, and use mhchem formatting as need be. For instance write $\ce{NH4+}$ as \$\ce{NH4+}$. For more on formatting see: chemistry.meta.stackexchange.com/questions/86/… Commented Oct 21, 2022 at 14:55