Sodium and oxygen combine to form two compounds of which one is an a t...
Explanation : Percentage of sodium in Na2O is nd percentage of o2 is 25.8percent.Percentage of sodium in other compound is 59 percent ,while that of o2 is 41 percent.... The ratio of masses of sodium combining with the fixed mass of 02 is 2.87: 1.44=2:1. Therefore the formula of the other compound is Na2O2.
Sodium and oxygen combine to form two compounds of which one is an a t...
Sodium and Oxygen Compounds
When sodium (Na) and oxygen (O) combine, they can form various compounds. The two primary compounds formed are sodium oxide (Na2O) and sodium peroxide (Na2O2).
Finding the Formula Based on Percentage
Given that the percentage of sodium in one of the compounds is 59%, we can calculate the formula of this compound.
Step 1: Understand the Composition
- Sodium has an atomic mass of approximately 23 g/mol.
- Oxygen has an atomic mass of approximately 16 g/mol.
Step 2: Calculate the Molecular Weight of Compounds
For sodium oxide (Na2O):
- Molecular weight = (2 * 23) + (1 * 16) = 46 + 16 = 62 g/mol
For sodium peroxide (Na2O2):
- Molecular weight = (2 * 23) + (2 * 16) = 46 + 32 = 78 g/mol
Step 3: Calculate the Percentage of Sodium
For sodium oxide:
- Percentage of sodium = (Total sodium mass / Molecular weight) * 100
- Percentage of sodium = (46 / 62) * 100 = 74.19% (not 59%)
For sodium peroxide:
- Percentage of sodium = (Total sodium mass / Molecular weight) * 100
- Percentage of sodium = (46 / 78) * 100 = 58.97% (approximately 59%)
Conclusion
Since the calculated percentage of sodium (approximately 59%) matches the given condition, the formula of the compound is:
Na2O2 (Sodium Peroxide)
This compound contains sodium and oxygen in the ratio that results in the specified percentage of sodium.