Question

Kaochlor, a 10% (m/v) KCl solution, is an electrolyte solution. How many milliequivalents of K+ are in a 30 ml dose.

Answer 1

A 10% m/v solution means 10 g KCl/100 mL solution. How many milliequivalents are in the 10 g KCl? That will be
10g/0.07455 = 134.1 m.e. in 100 mL.
You take 30 mL for a dose; therefore,
134.1 x 30 mL/100 mL = 40.24 m.e. in a 30 mL portion. I would round that to 40 m.e. to two significant figures (all you are allowed with the 10 and 30)

Answer 2

I know this is extremely late but where does the .07455 come from?

Answer 3

From the molar mass of K & CL.