1. Calculate the molar mass of CuSO₄:
* Cu: 63.55 g/mol
* S: 32.06 g/mol
* O (4 atoms): 16.00 g/mol x 4 = 64.00 g/mol
* Total molar mass of CuSO₄ = 63.55 + 32.06 + 64.00 = 159.61 g/mol
2. Calculate the moles of CuSO₄:
* Moles = mass / molar mass
* Moles of CuSO₄ = 42.1 g / 159.61 g/mol = 0.264 mol
3. Determine the ions produced:
* When CuSO₄ dissolves in water, it dissociates into copper(II) ions (Cu²⁺) and sulfate ions (SO₄²⁻):
* CuSO₄(aq) → Cu²⁺(aq) + SO₄²⁻(aq)
4. Calculate the moles of ions:
* Since one mole of CuSO₄ produces one mole of Cu²⁺ and one mole of SO₄²⁻, the total number of moles of ions is:
* 0.264 mol Cu²⁺ + 0.264 mol SO₄²⁻ = 0.528 mol ions
Therefore, 42.1 g of CuSO₄ dissolved in water releases 0.528 moles of ions.
