Consider the Mono Lake water analysis provided $($see attached

spreadsheet$)$:

A$.$ Calculate the charge and the mass balance $\%$ of the given water analysis

and discuss whether it is acceptable within the $5\%$ tolerance $(8$ pt$)$

B$.$ Calculate the ion strength of the solution $($to be used in the activity model$)$

$(5$ pt$)$

C$.$ Speciate the solution $($as a closed system$)$ using ChemEQL $($use the Davies

model for activity coefficients$).$ Note that ChemEQL input$/$output

concentrations are in $mo\frac{l}{k}g.$ Highlight the speciation of carbon species: is

it reasonable to assume $-1$ for $C{O}_3$ charge equivalent? $(7$ pt$)$