Answer :
The infusion rate should be set to 50 mL/hr.
To determine the infusion rate in mL/hr, we need to calculate how many mL correspond to 10 mEq.
Given that the solution contains 20 mEq in 100 mL:
Find the mEq per mL ratio: 20 mEq / 100 mL = 0.2 mEq/mL.
Determine the infusion rate in mL/hr: 10 mEq/hr ÷ 0.2 mEq/mL = 50 mL/hr.
Thus, the infusion rate should be set to 50 mL/hr.