Question

Write down the concentration of the following solutions in g/L and moll
6 g of NaOH dissolved in 2 L aqueous solution. Show calculation of molecular mass
also. (at mass of Na=23, O=16,H=1)​

Answer 1

Answer:

The molar mass of NaOH is 40 g/mol.

The number of moles of NaOH is equal to the ratio of its mass to molar mass.

The number of moles of NaOH =

40g/mol

40g

=1mol

The molarity of NaOH solution is the ratio of number of moles of NaOH to total volume of solution in L.

M=

1L

1mol

=1M

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