To determine the valence number of a compound, we need to consider the valence of each individual element and the number of each element present in the compound.
In the compound C8H5KO4, we have the following elements:
- Carbon (C): Its valence number is typically 4, as carbon tends to form four covalent bonds.
- Hydrogen (H): Its valence number is 1, as hydrogen tends to form one covalent bond.
- Potassium (K): Its valence number is 1, as potassium tends to lose one electron to achieve a stable electron configuration.
- Oxygen (O): Its valence number is typically 2, as oxygen tends to form two covalent bonds or gain two electrons to achieve a stable electron configuration.
Now, let's look at the number of each element present in the compound:
- C8: There are 8 carbon atoms, so the total valence number for carbon would be 8 * 4 = 32.
- H5: There are 5 hydrogen atoms, so the total valence number for hydrogen would be 5 * 1 = 5.
- K: There is 1 potassium atom, so the valence number for potassium would be 1.
- O4: There are 4 oxygen atoms, so the total valence number for oxygen would be 4 * 2 = 8.
Now we can calculate the overall valence number of the compound:
Valence number = Valence number of C + Valence number of H + Valence number of K + Valence number of O = 32 + 5 + 1 + 8 = 46
Therefore, the valence number of the compound C8H5KO4 is 46.