CBSE Class 12-science Answered
उस विलयन कि मोलरता की गणना कीजिए जिससे 5 ग्राम NaoH 450 ML विलियन में घुला हुआ है
Asked by kamlesh.kumar.malee | 20 Dec, 2023, 06:59: AM
Expert Answer
Dear Student,
To calculate moles of NaOH:
Mass of NaOH = 5 g
volume of solution = 450 mL = 450 × 10-3 L
Molar mass of NaOH = 23 + 16 + 1 = 40 g mol-1
Moles of NaOH = Mass of NaOH / Molar mass of NaOH
Moles of NaOH = 5 g / 40 g mol-1 = 0.125 mol
Molarity of solution = Moles of Solute / Volume of solution in L
Molarity = 0.125 mol / (450 × 10-8 L) = 0.278 mol L-1 = 0.278 M
Answered by | 20 Dec, 2023, 10:10: AM
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