Question

What is the concentration, mass/volume percent (m/v), of a solution prepared from 30.gNaCl and 1.5 L of water?​

Answer 1

The concentration, mass/volume percent (m/v) : 1.98%

Further explanation

`\tt \%m/v=(mass~solute)/(volume~of~solution)* 100\%`

mass solute = mass of NaCl = 30 g

volume of solution = volume of water + volume of NaCl

volume of water = 1.5 L = 1500 ml

volume of NaCl :(density = 2.16 g/ml)

`\tt V=(30)/(2.16)=13.8~ml`

volume of solution :

`\tt 1500+13.8=1513.8~ml`

the concentration (%m/v) :

`\tt (30)/(1513.8)* 100=1.98\%`