Quantitative Analysis of Salts (VCE SSCE Chemistry): Quizzes

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Quantitative Analysis of Salts
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What is water of hydration in salt crystals?

Water molecules trapped in crystal lattice

What does the term 'anhydrous' mean?

Without water

Why do some transition metal salts change color when dehydrated?

Electron energy levels change

What happens when a hydrated salt is heated?

Water is released as steam

What formula converts mass to moles?

n=mMn = \frac{m}{M}

How is xx calculated in CuSO4xH2O\text{CuSO}_4 \cdot x\text{H}_2\text{O}?

n(H2O)n(CuSO4)\frac{n(\text{H}_2\text{O})}{n(\text{CuSO}_4)}

What does gravimetric analysis measure?

Mass of precipitate to find ion quantity

What is Step 3 in the gravimetric analysis procedure?

Add excess precipitating solution

Why use excess precipitating solution in gravimetric analysis?

Ensures all target ion precipitates

Which is an application of gravimetric analysis?

Calibrating modern instruments

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