![](https://cos-cdn.shuashuati.com/pipixue-web/2020-1231-2005-12/ti_inject-812ce.png)
称取纯K 2 Cr 2 O 7 5.8836g,配制成100mL溶液,则此溶液中: c(K 2 Cr 2 O 7 )= _________ mol ·L -1 ; c(1/6K 2 Cr 2 O 7 )= _________ mol ·L -1 ; T(K 2 Cr 2 O 7 /Fe)= _________g · mL -1 ; T(K 2 Cr 2 O 7 /Fe 2 O 3 )= _________g · mL -1 。 [ M(Fe)=55.85 M(K 2 Cr 2 O 7 )=294.18 M(Fe 2 O 3 )=159.69 ]