the sum of the concentrations of each of the reactant species is equal to the sum of the concentrations of each of the product species.

the rate of production of each of the product species is equal to the rate of consumption of each of the product species by the reverse reaction.

the rate of consumption of each of the product species by the reverse reaction is equal to the rate of production of each of the reactant species by the reverse reaction.

the rate of production of each of the product species is equal to the rate of consumption of each of the reactant species by the reverse reaction.

HSO₄^–, HCN

HSO₄^–, CN^–

CN^–, HCN

CN^–, SO₄^2–

12.00

9.00

1.00

13.00

3[Ca²⁺]³ + 2[PO₄^3–]²

[Ca²⁺]³ × [PO₄^3–]²

[3 × Ca²⁺]³ × [2 × PO₄^3–]²

3[Ca²⁺] × 2[PO₄^3–]

unpredictable

reaction in the reverse direction

no change

reaction in the forward direction

A strong acid dissociates completely into H₃O⁺ ions when dissolved in water, whereas a weak acid does not.

Strong acids usually have a higher pH than weak acids.

A weak acid dissociates completely into H₃O⁺ ions when dissolved in water, whereas a strong acid does not.

A weak acid will only neutralise a weak base, and a strong acid will only neutralise a strong base.