Exam-Style Volumetric Problems (Leaving Cert Chemistry): Flashcards

$n = \frac{m}{RMM}$

$n = \frac{V \times M}{1000}$

$\frac{V_1 \times M_1}{n_1} = \frac{V_2 \times M_2}{n_2}$

Density = $\frac{\text{Mass}}{\text{Volume}}$

Starch solution

When solution becomes pale yellow

Blue-black to colourless

Forms complex with iodine → blue-black colour

Tap water contains chlorine ions that interfere

Number of moles that react per balanced equation

Divide by 1000 when volume is in cm³

Understand what you're asked to find

Write the balanced equation