Question

What is the molarity of 5.30 g of Na2CO3 dissolved in 400.0 mL solution?

Answer 1

given:

5.30 g of Na2CO3 dissolved in 400.0 mL solution.

to find:

the molarity

solution:

`mv = (grams)/(molar \: mass)`

`(x)(0.4000l)`

`= 5.30g |105.988g \: {mol}^( - 1)`

`= 0.12501415m`

`x = 0.125m`

therefore, the molarity of 5.30 g of Na2CO3 dissolved in 400.0 mL solution is 0.125m.