8 AM CST is allowed, with a one time 10% penalty to submitted score. Use the Ref

Question

8 AM CST is allowed, with a one time 10% penalty to submitted score. Use the References to access important values if needed for this question. 2+ In the laboratory you are gi For each reagent listed below indicate if it can be used to separate the ions. 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 KBr 2. K2CO3 KOH Submit Answer ons: Choose Reagents: This is your final group attempt Autosaved at 5:08 PM

Explanation / Answer

Y or N              reagent             formula precipitate if yes
Y                  KBr                    Yes    AgBr ( pale yellow)
No                  K2CO3             No     Ag2CO3 (yellow) , CaCo3( white)
Y                   KOH                  yes    AgOH ( brown)

Ag^+ (aq) + KBr(aq) ---------------> AgBr(s) + K^+(aq)     AgBr is precipitate

Ca^+2 (aq) + 2KBr(aq) ------------> CaBr2(aq) + 2K^+

Ag^+, Ca^2+ ions are gives precipitate with K2Co3. So they are not seperate with K2Co3

Ag^+ (aq) + KOH(aq) ------------> AgOH(s) + K^+ (aq)    AgOH is precipitate

Ca^+2(aq) + 2KOH(aq) --------------> Ca(OH)2 (aq) + 2K^+ (aq0

     

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