Find the molar mass of Chromium (III) Hydrogen Phosphate. Also, what is the chemical formula for this molecule?
To find the molar mass of Chromium (III) Hydrogen Phosphate and determine its chemical formula, we need to understand the composition of the compound and the atomic masses of its constituent elements.
Chromium (III) Hydrogen Phosphate contains the elements chromium, hydrogen, phosphorus, and oxygen. Let's break down the compound and determine the atomic masses of its constituent elements:
1. Chromium (III): The Roman numeral (III) indicates the chromium ion has a +3 charge, meaning it has three fewer electrons than the neutral chromium atom. The atomic mass of chromium is approximately 51.996 g/mol.
2. Hydrogen: Hydrogen is present as an individual atom in this compound, and its atomic mass is approximately 1.008 g/mol.
3. Phosphate: The phosphate ion (PO4) has a -3 charge, which means it combines with three positive ions. Phosphorus has an atomic mass of approximately 30.974 g/mol, and oxygen has an atomic mass of approximately 15.999 g/mol.
Now, let's calculate the molar mass:
Molar mass of Chromium (III) Hydrogen Phosphate = (Mass of Chromium) + (3 x Mass of Hydrogen) + (Mass of Phosphorus) + (4 x Mass of Oxygen)
= (51.996 g/mol) + (3 x 1.008 g/mol) + (30.974 g/mol) + (4 x 15.999 g/mol)
Calculating this using a calculator, we find:
Molar mass of Chromium (III) Hydrogen Phosphate ≈ 233.963 g/mol
Therefore, the molar mass of Chromium (III) Hydrogen Phosphate is approximately 233.963 g/mol.
Regarding the chemical formula, Chromium (III) Hydrogen Phosphate can be represented as Cr(H2PO4)3.