Hydrated copper sulfate has the formula CuSO4.5H2O.The formula tells us that each mole of copper sulfate contains 5 moles of water. A sample of CuSO4.5H2O was heated gently until all the water was removed to form anhydrous copper sulfate, CuSO4.CuSO4.5H2O → CuSO4 + 5H2O.The mass of water formed was 4.5 g.Calculate the mass of hydrated copper sulfate that was heated – 9002

Q1.

Hydrated copper sulfate has the formula CuSO4.5H2O.

The formula tells us that each mole of copper sulfate contains 5 moles of water.

A sample of CuSO4.5H2O was heated gently until all the water was removed to form anhydrous copper sulfate, CuSO4.

CuSO4.5H2O → CuSO4 + 5H2O

The mass of water formed was 4.5 g.

Calculate the mass of hydrated copper sulfate that was heated.

(relative atomic masses: H = 1.0, O = 16.0; relative formula mass: CuSO4.5H2O = 249.5)

(4)

One thought on “Hydrated copper sulfate has the formula CuSO4.5H2O.The formula tells us that each mole of copper sulfate contains 5 moles of water. A sample of CuSO4.5H2O was heated gently until all the water was removed to form anhydrous copper sulfate, CuSO4.CuSO4.5H2O → CuSO4 + 5H2O.The mass of water formed was 4.5 g.Calculate the mass of hydrated copper sulfate that was heated – 9002”

Simran Arora says:

July 18, 2025 at 11:02 am

Relative formula mass of water (H₂O) = 18.0
Moles of H₂O = 4.5 g ÷ 18.0 = 0.25 mol
From the formula, 5 moles of H₂O are in 1 mole of CuSO₄·5H₂O.
So, moles of CuSO₄·5H₂O = 0.25 ÷ 5 = 0.05 mol
Mass of CuSO₄·5H₂O = 0.05 × 249.5 = 12.475 g

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