Question

calculate molarity of a solution containing 5 gram of NaOH IN 450 ml of solution

Answer 1

hey dear
here is your answer

so, no. of moles = weight/molar mass

so, molar mass of NaOH = mass of Na + mass of O + mass of H

molar mass of NaOH = 23+16+1 = 40

no. of moles = 5/40 = 1/8

now, molarity = no. of moles/volume(in litres )

molarity = 1*1000/8*450. (we are multiplying it by 1000 to convert it into litres)

molarity = 1000/3600

molarity = 0.277 mole/litre or M

hope it helps :)