Potassium chloride (KCl) contains what percentage of K2O?

To determine the percentage of potassium oxide (K2O) in potassium chloride (KCl), we need to look at the molecular weights of the components involved. The molecular weight of potassium chloride is approximately 74.55 g/mol, while the molecular weight of potassium oxide is about 94.20 g/mol.

When calculating the amount of K2O in KCl, it is essential to note that potassium chloride contains potassium, which contributes to the total calculations. In KCl, there is one potassium atom (K) and one chloride atom (Cl). To find the equivalent K2O in KCl, we use the ratio of their molecular weights:

1. Calculate the weight of K in KCl: K has a molecular weight of approximately 39.10 g/mol.

2. The formula to convert K to K2O involves finding how many times K (39.10 g) fits into the equivalent weight of K2O (94.20 g).

Since K2O has two potassium atoms, the weight contribution of K for K2O is 2 * 39.10 = 78.20 g. Therefore, the conversion ratio of K to K2O would be about 78.20 g K contributes