InterviewSolution
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InterviewSolution
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p 67. A sample of NaOH weighing 0.38 g is dissolved inwater and the solution is made to 50.0 mL in avolumetric flask. What is the molarity of theresulting solution?N.C.E.R.T |
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Answer» No. of moles=given mass / molar massmolar mass of NaOH= 23+16+1=40ggiven mass=0.38gno. of moles=0.38/40=9.5×10^-3molarity=no. of moles/ volume in lit.volume =50mlmolarity = 9.5×10^-3×10^3/50=1.9×10^-1 |
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