Question

Calculate molarity of 75g od mgcl2dissolve in 500ml of solution

Answer 1

Explanation:

Molarity = $(\frac{given weight}{molecular weight} )(\frac{1000}{volume(in mL)})$

Given weight  = 75g

Molecular weight (MgCl2) = 95g

Volume = 500mL

=>Molarity = $(\frac{75}{95} )(\frac{1000}{500} )$ = $\frac{(15)(2)}{19}= \frac{30}{19}$

Therefore Molarity = 1.57M (aprrox.)