OCR Chemistry A – 5.1.2 How Far?

Answer explanation

5.1.2(a)

Answer explanation

5.1.2(a)

Answer explanation

5.1.2(a)

The sum of all the ρP is the

(a)  

Answer explanation

5.1.2(a)

Liquids and solids should be omitted from K expressions in the case of (a)   equilibria

Answer explanation

5.1.2(d)

Which equilibrium constants would be appropriate for this system?

A(g) + B(g) ⇌ 2C(g)

• K_c

• K_p

• K_w

Answer explanation

5.1.2(d)

Which equilibrium constant/s would be appropriate for this system?

A(aq) ⇌ B(aq) + H₂O(l) + C(s)

• K_c

• K_p

• K_w

Answer explanation

5.1.2(d)

Which expression would be suitable for K_c of this system?

2A(aq) + B(aq) ⇌ C(s) + 2D(g)

Answer explanation

5.1.2(d)

Which expression would be suitable for K_p of this system?

2W(aq) + X(aq) ⇌ 3Y(aq) + Z(g)

Answer explanation

5.1.2(d)

"Explain the effect of temperature change on K"

Put the statements in the correct order

• The forward reaction is endothermic

• More reactants are made

• The reaction shifts to the right when T is increased

• K increases

• The numerator increases

Answer explanation

5.1.3(g)