# Tag Info

## New answers tagged acid-base

-1 votes

### How to calculate the pH of the neutralisation of HCN with excess of KOH?

The OH− resulting from KOH (0.06 M) that dissociation now push the equilibrium: Kb=[HCN]×[OH−]/[CN−] The contribution of the [OH−] coming from the hydrolysis of the cyanide can be ignored. Only the [...
-1 votes

### Why is there a charge on COOH⁻¹?

You have convoluted a simple chemical into a ponderous problem. The formula as written [H-CO-OH] implies that is there is a H attached to carbon and a H attached to oxygen. The conjugate base as ...
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6 votes

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3 votes

### pH calculation of a mixure containing 2 strong acids and a buffer mixture

First, you have to allow the strong acids to react with the weak base. $$\ce{HCl + NaOAc -> HOAc + Na+ + Cl-}$$ $$\ce{HNO3 + NaOAc -> HOAc + Na+ + NO3-}$$ This goes to completion. As a result, ...
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