Question

Item 7: Question (10 pts.) Chemical Formulas Scientific Notation Periodic Table Tables In the laboratory you are given the task of separating Ca2 and Zn2 lons in aqueous solution For each reagent listed below indicate if it can be used to separate the lons. Type "Y" for yes or "N" for no. If the reagent CAN be used to separate the ions, give the formula of the precipitate. If it cannot, type "No Y or N Reagent Formula of Precipitate if YES 1 Na,co K,S 2. Nal 3. Submit Submit and Next : Mark this question for later review. Skip to Previous Skip to Next

Answer 1

Y or N           Reagent          formula of precipitation

   N             Na2CO3              ----

Y                  Na2S                     Zns

N                   NaI                       ------------

   Zn^2+ (aq) + Na2S(aq) ------------> Zns(s) + 2Na^+ (aq)

ZnS is precipitate