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← ScienceWhich outcome occurs when an alumina crucible is used to melt sodium hydroxide?
A)Rapid crucible material degradation occurs✓
B)Sodium hydroxide undergoes thermal decomposition
C)Melt remains pure and unreactive
D)Crucible strength improves at high temperature
💡 Explanation
A redox reaction happens, because molten sodium hydroxide is strongly basic. This leads to the formation of sodium aluminate causing rapid crucible degradation by converting it to another compound by deconstruction (dissolution), therefore crucible fails rather than successfully containing it.
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