point 3 gram of oxalate salt versus all in hundred ml solution. the solution required 90 ml of 1 by 20 ml of a complete oxidation. the percentage of oxalate ion in Salt is

To determine the percentage of oxalate ion in the salt based on the information provided, we need to break down the problem step by step. Let's clarify what we know and how we can calculate the percentage effectively.

Understanding the Components

First, we have 3 grams of oxalate salt. Oxalate salts typically contain the oxalate ion (C2O4^2-), and we need to know the molar mass of the specific oxalate salt to find out how much of that mass is due to the oxalate ion itself. For example, if we consider sodium oxalate (Na2C2O4), the molar mass is approximately 134 g/mol.

Calculating the Molar Mass

Let’s calculate the molar mass of sodium oxalate:

• Sodium (Na): 22.99 g/mol × 2 = 45.98 g/mol
• Carbon (C): 12.01 g/mol × 2 = 24.02 g/mol
• Oxygen (O): 16.00 g/mol × 4 = 64.00 g/mol

Adding these together gives:

45.98 + 24.02 + 64.00 = 134.00 g/mol

Finding the Oxalate Ion Contribution

The oxalate ion itself (C2O4^2-) has a molar mass of:

• Carbon (C): 12.01 g/mol × 2 = 24.02 g/mol
• Oxygen (O): 16.00 g/mol × 4 = 64.00 g/mol

Thus, the molar mass of the oxalate ion is:

24.02 + 64.00 = 88.02 g/mol

Calculating the Percentage of Oxalate Ion

Now, to find the percentage of the oxalate ion in the salt, we use the formula:

Percentage of oxalate ion = (mass of oxalate ion / mass of salt) × 100

In our case, we need to find out how much of the 3 grams of sodium oxalate is due to the oxalate ion:

Percentage of oxalate ion = (88.02 g/mol / 134.00 g/mol) × 100

Calculating this gives:

Percentage of oxalate ion = (88.02 / 134.00) × 100 ≈ 65.7%

Relating to the Solution Volume

You mentioned that the solution required 90 ml of a 1:20 dilution for complete oxidation. This indicates that the concentration of the oxalate ion in the solution is also important, but it does not directly affect the percentage of the oxalate ion in the salt itself. The dilution factor can help in determining how much oxalate ion is present in the solution, but for the percentage calculation, we focus solely on the mass of the salt.

Final Thoughts

In summary, if we assume sodium oxalate as the salt in question, approximately 65.7% of the mass of the salt is due to the oxalate ion. If you have a different oxalate salt in mind, you would need to adjust the molar masses accordingly, but the method remains the same. This approach allows you to understand the relationship between the mass of the salt and the specific ions it contains.