why is Benedict reagent more stable than fehling's reagent?

Dear student

Fehling's solution is made up out of two separate solutions, is caustic, and doesn't keep well. Benedict's solution is more stable, is a single solution, and has no caustic properties, making it easier to handle. 
Benedict solution is contains Cu2+ ions and it is a mild oxidizing agent.. 
HOPE IT CLEARS 
regards 
 

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