Memory Block

[butterfly]

hi, if anyone could help me remember how to do these questions it would be greatly appreciated i just have a memory block and think i am forgetting something when trying to get the answer to these.

 

a) How many moles of hydrogen peroxide react with each mole of permanganate in the titrationmoles of MnO4- per mole of H2O2

 

b) Calculate the concentration of hydrogen peroxide in the 10 mL aliquot, taken from the reaction if the titration with 0.0176 M permanganate solution requires 32.8 mL to reach the end-point

 

c) If the concentration of hydrogen peroxide in the 10 mL aliquot is 0.0568, calculate ln([H2O2])

 

you don't have to answer them a little nudge in the right direction would be good though cause i used to be able to do them!

[NSX]

Knowing what titration means in a chemical rx, what the chemical name means & [Concentration] = (# of moles)/(volume) should be sufficient to solve your problems.

[butterfly]

um.... i still dont understand.. could u explain it a little more? thanx

[pulkit]

1. Write down a balanced chemical equation for the redox reaction b/w the reagents mentioned.

 

2.Then by using the ratios in which the chemicals react, you can answer all those questions.