Answer: 0.069 mmol/L
Explanation:
Molarity of a solution is defined as the number of moles of solute dissolved per Liter of the solution.
[tex]Molarity=\frac{n\times 1000}{V_s}[/tex]
where,
n= moles of solute = [tex]3.46\mu mol[/tex] = [tex]0.001\times 3.46=3.46\times 10^{-3}mmol[/tex]
1micro (µ) = 0.001 milli (m)
[tex]V_s[/tex] = volume of solution in ml= 50 ml
[tex]Molarity=\frac{3.46\times 10^{-3}\times 1000}{50ml}=0.069mmol/L[/tex]
Thus concentration in mmol/L of the chemist's potassium dichromate solution is 0.069.
