【简答题】用同一KMnO 4 溶液分别滴定体积相同的FeSO 4 和H 2 C 2 O 4 溶液,消耗的KMnO 4 溶液体积相等,则 (A) c(FeSO 4 )=c(H 2 C 2 O 4 ) (B) c(FeSO 4 )=2c(H 2 C 2 O 4 ) (C) 2c(FeSO 4 )=c(H 2 C 2 O 4 ) (D) c(FeSO 4 )=4c(H 2 C 2 O 4 ) (E) ...
【简答题】用同一KMnO 4 溶液分别滴定体积相同的FeSO 4 和H 2 C 2 O 4 溶液,消耗的KMnO 4 溶液的体积数相等。下列有关FeSO 4 及H 2 C 2 O 4 溶液浓度c(单位:mol·L -1 )的关系式中正确的是哪一种? A.c(FeSO 4 )=C(H2C204) B.c(FeSO 4 )=2c(H 2 C 2 O 4 ) C.c(H 2 C 2 O 4 )=2c(FeS...
【判断题】Henan not only has lots of places of interest but also plenty of natural scenic spots.
【判断题】Henan cuisine has the great interest of using leeks widely.