What happens when sodium hydroxide is mixed in water?
(i)Hydronium ions will be produced
(ii)Heat is released during dissolution
(iii)The process is endothermic
(iv)Hydroxide ions will be produced
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(i)Hydronium ions will be produced
(ii)Heat is released during dissolution
(iii)The process is endothermic
(iv)Hydroxide ions will be produced
[B] (ii) and (iv)
When sodium hydroxide in mixed with water, then ionisation takes place,
NaOH + H₂O → Na⁺ + OH⁻ + H₂O
Hydroxide ions are formed and a lot of heat is generated or released during dissolution.