Royal Society of Chemistry

Table 1.5

Simplified Classification of Reaction Rates of Bonds

Rate	Chemical Species
Very slow	C – H, C – C, C – N, C – O, C – Halide, S = O
Slow	PO₄R²⁻, – CO₂R, S – R,
Intermediate	Some complex ions e.g. of Cr³⁺ and Co³⁺, Mn = O, Mo = O
Fast	Mg²⁺, Ni²⁺
Very fast	Na⁺, K⁺, Cl⁻, Ca²⁺, Zn²⁺, H⁺

Rate	Chemical Species
Very slow	C – H, C – C, C – N, C – O, C – Halide, S = O
Slow	PO₄R²⁻, – CO₂R, S – R,
Intermediate	Some complex ions e.g. of Cr³⁺ and Co³⁺, Mn = O, Mo = O
Fast	Mg²⁺, Ni²⁺
Very fast	Na⁺, K⁺, Cl⁻, Ca²⁺, Zn²⁺, H⁺