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A sample of NaOH weighing 0.38 g is diss...

A sample of NaOH weighing 0.38 g is dissolved in water and the solution is made to 50.0 mL in a volumetric flask. What is the molarity of the resulting solution ?

A

0.29

B

0.19

C

0.39

D

0.9

Text Solution

Verified by Experts

The correct Answer is:
B
mili moles of NaOH = `M xx V_("in mL")` or `w/("Mol. Mass") xx 100 = M xx V_("in mL")`
`0.39/40 xx 1000 = M xx 50`
`therefore M = 0.19`
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