Calculate the molarity of NaOH in the solution prepared by dissolving its 4g in enough water to form 250mL of the solution.

Solution

Moles space of space NaOH space equals space fraction numerator Weight space NaOH over denominator Molar space mass space of space NaOH end fraction

equals space 4 over 40 space equals 0.1 space m o l e

Volume of solution = 250 mL

therefore space space Molarity space space equals space fraction numerator mol over denominator space rquired space volume end fraction cross times space 1000 space mL space Molarity space space equals space fraction numerator 0.1 space mol over denominator 250 space mL end fraction cross times space 1000 space mL space equals space 0.4 space straight M

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