23.2 Manganate (VII) redox titrations

Question 1

how are manganate titrations carried out?

Answer 1

1. add KMnO4 to burette
2. add H2SO4 to a conical flask
3. titrate the 2 together
4. stop titration when solution goes pink (end point)
5. repeat titration for until concordant results

Question 2

what colour doe MnO4- ions turn to when reduced?

Answer 2

pink

Question 3

what is Mn in MnO4- reduced to in a titration?

Answer 3

to Mn2+

Question 4

ratio of MnO4- to Fe2+

Answer 4

1 to 5

Question 5

ration of MnO4- to (COOH)2

Answer 5

2 to 5

Question 6

ratio of Cr2O7 2- to Fe 2+

Answer 6

1 to 6