# How do you calculate moles to neutralise oxalic acid?

• Chemistry
• Daniel2244
In summary, the problem is to calculate the number of moles of potassium manganate needed to neutralize oxalic acid. The equation provided is 2KMnO4 + 5H2C2O4 + 16H+ --> 2Mn2+ + 10CO2 + H2O. Using the equations n = c x V and n= m/Ar, it is determined that the moles of manganate needed is 5.425x10-4. However, there may be issues with the mole ratio and further calculations are needed.
Daniel2244

## Homework Statement

calculate the number of moles of potassium manganate required to neutralise oxalic acid.
2KMn)4- + 5H2C2O42-+ 16H+ --> 2Mn2+ + 10CO2 + H2O

n = c x V
n= m/Ar

## The Attempt at a Solution

Moles of oxalic acid = 5x10-4
Volumeol of KMnO4 = 0.01085dm-3
Concentration of oxalic acid = 0.05 therefore concentration of manganate is the same (might be wrong).

moles manganate= c x V = 0.05 X 5x10-4= 5.425x10-4.
However, I think this is wrong and that you're meant to use the mole ratio difference to get the moles, but I'm not sure how.

Just follow the stoichiometry. How many moles of KMnO4 are needed to oxidize (not neutralize!) 5×10-4 moles of oxalic acid? In what volume of 0.01085 M solution will you find this amount of permanganate?

There are several problem with your reaction equation, KMnO4/(COOH)2 ratio is still OK though.

## 1. How do you calculate the number of moles of oxalic acid?

To calculate the number of moles of oxalic acid, you need to know the mass of the substance and its molar mass. Divide the mass of oxalic acid by its molar mass to get the number of moles.

## 2. What is the formula for calculating moles to neutralise oxalic acid?

The formula is: moles of oxalic acid = mass of oxalic acid / molar mass of oxalic acid.

## 3. How do you determine the molar mass of oxalic acid?

The molar mass of oxalic acid can be found on the periodic table by adding the atomic masses of each element present in the compound. The molar mass of oxalic acid is 126.07 g/mol.

## 4. How many moles of oxalic acid are needed to neutralise a certain amount of base?

The number of moles of oxalic acid needed to neutralise a base depends on the molar ratio between the acid and base. This can be determined by the balanced chemical equation of the reaction.

## 5. Can you use the same calculation to neutralise other acids?

Yes, the same calculation can be used to neutralise other acids. You just need to know the molar mass of the specific acid and the molar ratio between the acid and base in the reaction.

Replies
12
Views
2K
Replies
3
Views
2K
Replies
3
Views
5K
Replies
2
Views
3K
Replies
4
Views
2K
Replies
2
Views
21K
Replies
16
Views
3K
Replies
5
Views
6K
Replies
5
Views
2K
Replies
1
Views
16K