(1) In a precipitation residual titration using AgNO3 VS as the excess titrant and NH4SCN VS...

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(1) In a precipitation residual titration using AgNO3 VS as the excess titrant and NH4SCN VS as the back titrant, the endpoint in the sample titration is indicated using the Mohr method to precipitate the excess AgNO3. (II) In a precipitation direct titration with blank determination using AgNO3 VS, the endpoint in the blank titration in a Fajans indicator is marked by the adsorption of AgNO3 with the indicator. O Statements (1) and (II) are incorrect. Only statement (II) is correct. Statements (1) and (II) are correct. Only statement (1) is correct. (1) In a precipitation residual titration using AgNO3 VS as the excess titrant and NH4SCN VS as the back titrant, the endpoint in the sample titration is indicated using the Mohr method to precipitate the excess AgNO3. (II) In a precipitation direct titration with blank determination using AgNO3 VS, the endpoint in the blank titration in a Fajans indicator is marked by the adsorption of AgNO3 with the indicator. O Statements (1) and (II) are incorrect. Only statement (II) is correct. Statements (1) and (II) are correct. Only statement (1) is correct.

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