Question

If 30 ml. of M/2 HCI. 20 ml. of M/10 HCl and 50 ml of M/5 HCl are mixed together, the molarity of the mixture is 1) 0.27 M 2) 0.5 M 3) 0.3 M 4) 0.37 M​

Answer 1

Answer: 0.27 M

Explanation:

The formula to be used here is -

$M_{mix} = \frac{M_{1}V_{1} + M_{2}V_{2}}{V_{mix}} \\M_{mix} =\frac{0.5*30 + 0.1*20+0.2*50}{100} \\M_{mix} = \frac{15+2+10}{100} \\M_{mix}= 0.27 M$

Hope it helps!