A 100 ml test portion from a mining site requires 9.62 mL of 0.000169M Ag+ titrant to reach the endpoint using the reaction described above. What is the CN^-1 concentration in this water sample?
The concentration of
This appears to be a titration of cyanide ion with silver nitrate solution.
You use a 5-(p-dimethylaminobenzylidine)rhodanine indicator and titrate to the first colour change from yellowish-brown to a pink ("salmon") colour.
The equation for the reaction is
The conversions involved are
1. Moles of
2. Moles of
3. Mass of
4. Concentration of