Partial Pressure (AQA A-Level Chemistry): Quizzes

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Partial Pressure
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What is partial pressure?

Pressure each gas contributes to total

What does the partial pressure of a gas depend on?

Mole fraction and total pressure

What is mole fraction of gas AA in a mixture?

Moles of AA / total moles of all gases

How is partial pressure p(A)p(A) calculated from mole fraction?

p(A)=xA×Pp(A) = x_A \times P

What does the sum of all partial pressures equal?

The total pressure

If xA=0.4x_A = 0.4 and total pressure is 100 kPa, what is p(A)p(A)?

40 kPa

If xC=0.3x_C = 0.3 and total pressure is 100 kPa, what is p(C)p(C)?

30 kPa

What does I.C.E stand for in equilibrium calculations?

Initial, Change, Equilibrium

For H2+Br2↔2HBr\text{H}_2 + \text{Br}_2 \leftrightarrow 2\text{HBr}, if 0.824 mol HBr forms, how much H2\text{H}_2 reacts?

0.412 mol

Starting with 1.00 mol H2\text{H}_2, if 0.412 mol reacts, what remains at equilibrium?

0.588 mol

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