Question

KCl has a concentration of 20 mEq/40 ml. The DVM orders 25 mEq be added to 1 L of LRS. How many ml of KCl must be added to LRS to prepare this order?

a) 50 ml
b) 25 ml
c) 100 ml
d) 75 ml

Answer 1

To prepare the order, 50 ml of KCl must be added to LRS.

Step-by-step explanation:

To calculate the volume of KCl that needs to be added to LRS to prepare the order, we need to use the concept of dilution. The initial concentration of KCl is given as 20 mEq/40 ml. We can set up a proportion to find the volume of KCl needed:

(20 mEq/40 ml) = (25 mEq/x ml)

Cross multiply and solve for x:

20x = 1000

x = 50 ml

Therefore, 50 ml of KCl must be added to LRS to prepare the order.