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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

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

Grade:6

1 Answers

Jitender Pal
askIITians Faculty 365 Points
7 years ago

(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

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