Determine the molar mass and the molar mass of the Na2C2O4 equivalent.

In order to complete this task, we perform the following actions:
1. We consider the molar mass of this compound, the result is the following solution:
M (Na2C2O4) = 23 × 2 + 12 × 2 + 4 × 16 = 118 g / mol
2. Next, we calculate the molar mass of the equivalent using the following formula:
Meq (salt) = M (salt) / z
To find z we use the following formula:
z = n (Me) × c.o. (Me)
z = 2 × 1 = 2
We substitute in this formula and we get the following solution:
Meq = 118 g / mol ÷ 2 = 59 g / mol
Answer: M salt = 118 g / mol, Meq (salt) = 59 g / mol.