what is the chemical formula for copper(II)tetraoxosulphate(VI)pentahydrate
and what is its RMM
The chemical formula for copper(II)tetraoxosulphate(VI)pentahydrate is CuSO4·5H2O.
The relative molecular mass (RMM) can be calculated by adding up the atomic masses of all the elements in the formula:
RMM of CuSO4·5H2O = (63.55 g/mol for Cu) + (32.07 g/mol for S) + (4 * 16.00 g/mol for O) + (5 * 2.02 g/mol for H) + (5 * 18.02 g/mol for H2O)
= 249.69 g/mol
The chemical formula for copper(II)tetraoxosulphate(VI)pentahydrate is CuSO4.5H2O.
To calculate the relative molecular mass (RMM) of the compound, we need to determine the atomic masses of the elements present and multiply them by their respective subscripts:
Cu: 1 atom x atomic mass of Cu = 1 x 63.55 g/mol = 63.55 g/mol
S: 1 atom x atomic mass of S = 1 x 32.06 g/mol = 32.06 g/mol
O: 4 atoms x atomic mass of O = 4 x 16.00 g/mol = 64.00 g/mol
H: 10 atoms x atomic mass of H = 10 x 1.01 g/mol = 10.10 g/mol
Now, let's calculate the RMM of copper(II)tetraoxosulphate(VI)pentahydrate:
RMM = (Cu + S + 4O + 5H2O)
= (63.55 g/mol + 32.06 g/mol + 64.00 g/mol + 10.10 g/mol)
= 169.71 g/mol
Therefore, the relative molecular mass (RMM) of copper(II)tetraoxosulphate(VI)pentahydrate is approximately 169.71 g/mol.
To determine the chemical formula for copper(II)tetraoxosulphate(VI)pentahydrate and its relative molecular mass (RMM), we need to break down the name and understand the chemical components involved.
1. Copper(II): "Copper" refers to the element, and "(II)" indicates the copper ion has a charge of +2.
2. Tetraoxosulphate(VI): "Tetra" indicates four, "oxo" refers to oxygen, and "sulphate" relates to the polyatomic ion containing sulfur and oxygen. "(VI)" represents the charge of the sulphate ion, which is -2.
3. Pentahydrate: "Penta" signifies five, and "hydrates" mean water molecules. Therefore, the compound contains five water molecules.
Now, let's combine these components:
1. Copper(II) + Tetraoxosulphate(VI):
The copper ion has a charge of +2, and the tetraoxosulphate ion has a charge of -2. To balance the charges, we need two copper ions to react with one tetraoxosulphate ion. Therefore, the ratio becomes (CuSO4)2.
2. Copper(II)tetraoxosulphate(VI) + Pentahydrate:
Adding the five water molecules to the compound, we place the prefix "penta" before "hydrate." Therefore, the complete formula is (CuSO4)2.5H2O.
To calculate the RMM, we need to know the atomic masses of each element using the periodic table:
- Copper (Cu): 63.55 g/mol
- Sulfur (S): 32.07 g/mol
- Oxygen (O): 16.00 g/mol
- Hydrogen (H): 1.01 g/mol
Now we multiply the atomic masses by their respective subscripts and sum them up: (2 * 63.55) + 32.07 + (4 * 16.00) + (5 * (2 * 1.01 + 16.00)).
Calculating the expression gives us the RMM for the compound copper(II)tetraoxosulphate(VI)pentahydrate, which is approximately 409.81 g/mol.