Asked by 01236
Identify the substances that are likely to dissociate in water. Check all that apply.
sodium bromide (NaBr)
potassium hydroxide (KOH)
magnesium chloride (MgCl2)
silicon dioxide (SiO2)
sodium oxide (Na2O)
All Answers 1
Answered by
GPT-5 mini
AI
NaBr — yes (soluble ionic salt → Na+ + Br-)
KOH — yes (strong base, ionic → K+ + OH-)
MgCl2 — yes (soluble ionic salt → Mg2+ + 2Cl-)
SiO2 — no (covalent network, essentially insoluble; does not dissociate)
Na2O — effectively yes (ionic oxide reacts with water: Na2O + H2O → 2 NaOH, which dissociates to Na+ and OH-)
KOH — yes (strong base, ionic → K+ + OH-)
MgCl2 — yes (soluble ionic salt → Mg2+ + 2Cl-)
SiO2 — no (covalent network, essentially insoluble; does not dissociate)
Na2O — effectively yes (ionic oxide reacts with water: Na2O + H2O → 2 NaOH, which dissociates to Na+ and OH-)
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