Write a balanced chemical equation for dissolving sodium bromide in water.

Sodium bromide, like all ionic salt in water, dissociates.

NaBr (s) → H2O →  Na⁺(aq)  +  Br⁻(aq)  

Explanation:

Sodium bromide, like all ionic salt in water, dissociates but what does it happen with ions bromide and sodium?

Na⁺(aq) + H2O (l) ← H⁺(aq) + NaOH

Sodium ion comes from sodium hidroxide, which is a strong base so the ion is the weak conjugated acid. In water, it doesn't make reaction, that's why the arrow is in this direction ← .

The same situation is for the bromide. It comes from the bromhydric acid, an strong one, so the ion is the weak conjugate base.  

Br⁻(aq) + H2O (l) ← HBr(aq) + OH⁻(aq)

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