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Grade: 6
        
Which one of the following statements is correct ?
a. From a mixed precipitate of AgCI and AgI, ammonia solution dissolves only AgCI
b. Ferric ions give a deep green precipitate on adding potassium ferrocyanide solution
c. On boiling a solution having K^+, Ca^2+ and HCO^-base3 ions we get a precipitate of K base 2Ca(CO base 3) base 2
d. Manganese salts give a violet borax bead test in the reducing flame
4 years ago

Answers : (1)

Jitender Pal
askIITians Faculty
365 Points
							

(a) Between AgCI and AgI, AgI is less soluble, hence ammonia can dissolve ppt. of AgCI only due to formation of complex as given below:

AgCI + 2NH base 3 ? [Ag (NH base 3) base 2]CI

4 years ago
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