Kaochlor, a 10% (m/v) KCl solution, is an electrolyte solution. How many milliequivalents of K+ are in a 30 ml dose.
I know this is extremely late but where does the .07455 come from?
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)
From the molar mass of K & CL.
To determine how many milliequivalents (mEq) of K+ are in a 30 ml dose of Kaochlor, we need to know the concentration of K+ ions in the solution.
Given that Kaochlor is a 10% (m/v) KCl solution, it means that for every 100 ml of solution, there is 10 grams of KCl.
To calculate the mEq of K+ ions, we need to convert the grams of KCl to millimoles (mmol), and then to milliequivalents (mEq). Here's how to do it step by step:
Step 1: Calculate the amount of KCl in the 30 ml dose.
Since the Kaochlor solution is 10% (m/v), this means there are 10 grams of KCl in every 100 ml (or 1 gram per 10 ml). Therefore, in a 30 ml dose, we have:
(10 grams/100 ml) x (30 ml) = 3 grams of KCl.
Step 2: Convert grams of KCl to millimoles (mmol) of K+ ions.
The molar mass of KCl is 74.55 g/mol. We can calculate the number of millimoles of K+ ions in 3 grams of KCl using the formula:
3 grams / 74.55 g/mol = 0.04 moles = 40 mmol
Step 3: Convert millimoles (mmol) to milliequivalents (mEq) of K+ ions.
Since K+ ions have a valence of +1, 1 mmol of K+ ions is equivalent to 1 mEq of K+ ions. Therefore, 40 mmol of K+ ions is also equal to 40 mEq of K+ ions.
So, a 30 ml dose of Kaochlor contains 40 milliequivalents (mEq) of K+ ions.