Stoichiometry (VCE SSCE Chemistry): Quizzes

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Stoichiometry
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What law is the foundation of all stoichiometric calculations?

Law of conservation of mass

In 2KOH+H2SO4→K2SO4+2H2O2\text{KOH} + \text{H}_2\text{SO}_4 \rightarrow \text{K}_2\text{SO}_4 + 2\text{H}_2\text{O}, what is the mole ratio of KOH to H2SO4\text{H}_2\text{SO}_4?

2:1

What does the UOK mnemonic stand for in mole ratio calculations?

Unknown Over Known

When using n=c×Vn = c \times V, what units must volume be in?

Litres

What defines concordant titres?

Values within 0.10 mL of each other

If 25.00 mL is diluted to 250.0 mL, what is the dilution factor?

10.00

What is a standard solution?

A solution of known concentration

What is the equivalence point in a titration?

Point where equivalent amounts react

What is the first step in volume-volume stoichiometry calculations?

Write a balanced equation

How do you find the concentration of an undiluted solution after titrating a diluted sample?

Multiply diluted c by dilution factor

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