Redox Reactions: Why Doesn't 1 M NaOH Spontaneously Reduce Hydronium?

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Qube
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Homework Statement



Which of the following does not spontaneously reduce 1 M hydronium ion?

Homework Equations



Spontaneous reduction: + E-zero value.

The Attempt at a Solution



The answer is 1 M NaOH. However, sodium is a very strong reducer. Why doesn't this reaction go spontaneously?
 
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And what are "the following", which you have not listed?

While sodium is a strong reducer, kitchen salt doesn't reduce my meals. Calcium is a strong reducer too, but despite being present in my bones, it doesn't reduce me to... something reduced. Can you think why?
 
I really have no clue. I've been looking at redox for the past twelve hours. An explanation would b highly appreciated!
 
But you do know the difference between metallic sodium (Na) and oxidized sodium (Na+) in a compound?
 
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