Which base is employed as the electrolyte in alkaline batteries?
Ca(OH)2
Al(OH)3
FeOH
KOH
A
KOH
B
Ca(OH)2
C
Al(OH)3
D
FeOH
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Solution
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Aqueous potassium hydroxide is employed as the electrolyte in alkaline batteries based on nickel-cadmium, nickel-hydrogen, and manganese dioxide-zinc. Potassium hydroxide is preferred over sodium hydroxide because its solutions are more conductive.
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