Which of the following statements is incorrect ?

Question

Which of the following statements is incorrect ? (A) Fe2+ ion also gives blood red colour with SCN ion (B) Fe3+ ion also gives blood red colour with SCN-ion (C) On passing H2S into Na2ZnO2 solution a white ppt of ZnS is formed (D) Cupric ion reacts with excess of ammonia solution to give deep blue colour of [Cu(NH3)4]2+ ion

Tardigrade Admin · Accepted Answer

Only Fe3+ ions give blood red colouration with SCN- ions. Fe3++SCN- -> underset text(dark red)Fe(SCN)2+

Q. Which of the following statements is incorrect ?

$F e^{2 +}$ ion also gives blood red colour with $SCN$ ion

$F e^{3 +}$ ion also gives blood red colour with $SC N^{-}$ ion

On passing $H_{2} S$ into $N a_{2} Z n O_{2}$ solution a white ppt of $Z n S$ is formed

Cupric ion reacts with excess of ammonia solution to give deep blue colour of $[C u (N H_{3})_{4}]^{2 +}$ ion

Only $F e^{3 +}$ ions give blood red colouration with $SC N^{-}$ ions.
$Fe X^{3 ++} SCN X^{-}$ $(dark red) Fe (SCN) X^{2 +}$

Q. Which of the following statements is incorrect ?

Fe2+ ion also gives blood red colour with SCN ion

Fe3+ ion also gives blood red colour with SCN−ion

On passing H2​S into Na2​ZnO2​ solution a white ppt of ZnS is formed

Cupric ion reacts with excess of ammonia solution to give deep blue colour of [Cu(NH3​)4​]2+ ion

Only Fe3+ ions give blood red colouration with SCN− ions. FeX3++SCNX−​(dark red)Fe(SCN)X2+​

$F e^{2 +}$ ion also gives blood red colour with $SCN$ ion

$F e^{3 +}$ ion also gives blood red colour with $SC N^{-}$ ion

On passing $H_{2} S$ into $N a_{2} Z n O_{2}$ solution a white ppt of $Z n S$ is formed

Cupric ion reacts with excess of ammonia solution to give deep blue colour of $[C u (N H_{3})_{4}]^{2 +}$ ion

Only $F e^{3 +}$ ions give blood red colouration with $SC N^{-}$ ions.
$Fe X^{3 ++} SCN X^{-}$ $(dark red) Fe (SCN) X^{2 +}$