help- equation writing (1 Viewer)

[shagz_04]

this is probably another dumb question, but could someone please help me write the equation for the salinity test involving silver nitrate, a water sample with salt (the test is for determining the amount of chloride) and potassium dichromate as the indicator in a titration?
thanks,
shannon

 

[CM_Tutor]

The precipitation reaction is Ag⁺(aq) + Cl^-(aq) ---> AgCl(s)

The indicator is potassium chromate (not dichromate), which has a yellow solution. At the end point, a red precipitate of silver chromate is formed:

2Ag⁺(aq) + CrO₄^2-(aq) ---> Ag<sub?2</sub>CrO₄(s)