Chemistry: Copper(ii) sulfate forms a bright blue hydrate with the formula cuso 4 ⋅ n h 2 o ( s ) . if this hydrate is heated to a high enough temperature, h 2 o ( g ) can be driven off, leaving the grey‑white anhydrous salt cuso 4 ( s ) . a 14.220 g sample of the hydrate was heated to 300 ∘ c . the resulting cuso 4 ( s ) had a mass of 8.9935 g . calculate the val

Copper(ii) sulfate forms a bright blue hydrate with

zacharysharpe2805

16.01.2022

The value of n in the hydrate formula is 5 , CuSO_4.5H_2O .

Explanation:

$CuSO_4.nH_2O\rightarrow CuSO_4+nH_2O$

Mass of hydrate of copper sulfate = 14.220 g

Moles of hydrate of copper sulfate = $\frac{14.220 g}{(159.5+n\times 18) g/mol}$

Mass of copper sulfate after heating = 8.9935 g

Moles of copper sulfate = $\frac{8.9935 g}{159.5 g/mol}$

$\frac{14.220 g}{(159.5+n\times 18) g/mol}=\frac{8.9935 g}{159.5 g/mol}$

Solving for n, we get:

n = 5

The value of n in the hydrate formula is 5 , CuSO_4.5H_2O .

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tshegofatso92

06.11.2022

NameFormula and Charge NameFormula and Charge

ammoniumNH4+ hydroxideOH−

acetateC2H3O2−, or CH3COO−nitrateNO3−

bicarbonate (hydrogen carbonate)HCO3−nitriteNO2−

bisulfate (hydrogen sulfate)HSO4−peroxideO22−

carbonateCO32−perchlorateClO4−

chlorateClO3−phosphatePO43−

chromateCrO42−sulfateSO42−

cyanideCN−sulfiteSO32−

dichromateCr2O72−triiodideI3−

Explanation:

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