
The correct option(s) to distinguish nitrate salts of and taken separately is/are:
This question has multiple correct options
(A) shows the characteristic green colour in the flame test.
(B) Only shows the formation of precipitate by passing in an acidic medium.
(C) Only shows the formation of precipitate by passing in a faintly basic medium.
(D) has higher reduction potential than (measured under similar conditions).
Answer
151.8k+ views
Hint: and both give green colour in flame test. belongs to group-II of cationic radical will give ppt. of in acidic medium. Both ions form ppt. in the basic medium. (SRP) and (SRP).
Complete step by step solution:
A flame test is an analytical procedure in chemistry to detect the presence of certain elements, primarily metal ions, based on each element’s characteristic emission spectrum. and both give green colour in flame tests so we cannot distinguish between both ions.
is passed through the solution in an acidic medium to precipitate the sulphides of group-II cations. Sparingly soluble sulphides ions by the passage of hydrogen sulphide through the acidic medium. So, statement (B) is correct.
does not show the formation of precipitate by passing in a faintly basic medium. So, the statement (C) is not correct.
and . Hence, has higher reduction potential than . So, the statement (D) is correct.
Hence, the correct options are (B) and (D).
Note: The value of group-II sulphide is low in comparison to value of group-IV sulphides. Hence, they do not get precipitated in an acidic medium, where ion concentration is quite low. The main purpose of flame test is to observe the characteristic colour produced by certain metallic ions when vaporized in a flame and then to identify an unknown metallic ion by means of its flame test.
Complete step by step solution:
A flame test is an analytical procedure in chemistry to detect the presence of certain elements, primarily metal ions, based on each element’s characteristic emission spectrum.
Hence, the correct options are (B) and (D).
Note: The
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