# Augmentin question

1. Augmentin ES is a powder containing amoxicillin tri hydrate and potassium clavulanate for oral suspension. Each 5mL of reconstituted aqueous oral suspension contains 600mg of amoxicillin trihydrate and 7.07mg of potassium.
Calculate the mass of potassium clavulanate in 5mL of the oral suspension.

What I have found so far
Molar Mass K: 39.1gmol-1
Molar Mass Potassium clavulanate: 237.251gmol-1
Molecular Formula potassium clavulante: C8H8KN05

I think I need to find the moles of K in the 5mL solution and go from there, but I'm not sure how to use the moles of K to solve the problem.

GCT
Homework Helper
You need the molecular formula for the potassium clavulanate.

Also I need to calculate the volume of this suspension required to prepare 100mL of 25ppm(w/v) solution of amoxicillin trihydrate. assume desnity of suspension = 1kgL-1

I'm not sure if what I have done is right:

to get 25ppm I ned 2.5x10-5g/L solute
Conc. of 5mL suspension = 120g/L

Volume required = m/c = 2.5x10-5g/120gL-1 = 2.08x10-8L

GCT