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Which of the following salt gives white precipitate with \mathrm{AgNO}_{3} solution and dil. \mathrm{H}_{2} \mathrm{SO}_{4} solution and gives green flame test?

Option: 1

\mathrm{CuCl}_{2}


Option: 2

\mathrm{BaCl}_{2}


Option: 3

\mathrm{PbCl}_{2}


Option: 4

\mathrm{Cu}\left(\mathrm{NO}_{3}\right)_{2}


Answers (1)

best_answer

As we have learnt, 

The reactions which lead to formation of white precipitate are given below

2 \mathrm{AgNO}_{3}+\mathrm{BaCl}_{2} \rightarrow \underset{\text { (White) }}{2 \mathrm{AgCl}}+\mathrm{Ba}\left(\mathrm{NO}_{3}\right)_{2}

\mathrm{BaCl_2 + H_2SO_4 \longrightarrow \underset{(White)}{BaSO_4 }+ 2HCl}

Flame colour of \mathrm{Ba^{2+}} salt is green

Hence, the correct answer is Option (2)

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