A solution contains 0.05M of each of NaCl and Na_(2),CrO_(4),. Solid AgNO_(3), is gradually added to it. Whichof the following facts true (Given: K_(sp)(AgCl) = 1.7xx 106(-10) M^(2) and K_(sp)(Ag_(2),CrO_(4),) = 1.9 xx 10^(-12) M^(3):

A solution contains 0.05M of each of NaCl and Na_(2),CrO_(4),. Solid A

1.	A solution contains 0.05M of each of NaCl and Na_(2),CrO_(4),. Solid AgNO_(3), is gradually added to it. Whichof the following facts true (Given: K_(sp)(AgCl) = 1.7xx 106(-10) M^(2) and K_(sp)(Ag_(2),CrO_(4),) = 1.9 xx 10^(-12) M^(3):
Answer» <html><body><p>`Cl^(-) ` ions are precipitated first <br/>`CrO_4^(<a href="https://interviewquestions.tuteehub.com/tag/2-283658" style="font-weight:bold;" target="_blank" title="Click to know more about 2">2</a>-)` ions are precipitated first <br/>Both `Cl^(-) and CrO_4^(2-)` ions are precipitated <a href="https://interviewquestions.tuteehub.com/tag/together-3221943" style="font-weight:bold;" target="_blank" title="Click to know more about TOGETHER">TOGETHER</a> <br/>The second ion starts <a href="https://interviewquestions.tuteehub.com/tag/precipitating-2948233" style="font-weight:bold;" target="_blank" title="Click to know more about PRECIPITATING">PRECIPITATING</a> when ` [1^(st) ion ] =2.758 xx 10^(-5)` </p>Solution :` (a) [Ag^(+) ] _(cl^(-)) = ( 1.7 xx 10^(_10) )/(5xx 10 ^(_2)) =3.4 xx 10 ^(_9) M` <br/> ` [Ag^(+) ]_(CrO_4^(_2) ) = sqrt( (1.9 xx 10^(-12))/(5 xx 10 ^(_2)))=6.1 xx 10 ^(_6) M` <br/> ` Cl^(_) `Starts precipitation first<br/>` [Cl^(-)] =(K_(<a href="https://interviewquestions.tuteehub.com/tag/sp-1219706" style="font-weight:bold;" target="_blank" title="Click to know more about SP">SP</a>))/( [Ag^(+)]_(CrO_4^(_2)))= (1.7 xx 10 ^(-10))/(6.1 xx 10^(_6)) ` <br/> ` ""= 2.78 xx 10 ^(_5) M`</body></html>