Chemical weathering of rocks is much greater in a place with

Chemical weathering is the process of rock decomposition through chemical reactions such as oxidation, hydrolysis, and solution [3]. The rate of these reactions is primarily governed by temperature and moisture availability. Warm and wet climates promote rapid chemical weathering, whereas dry climates inhibit these processes [1]. High temperatures act as a catalyst, accelerating chemical reaction kinetics, while abundant rainfall provides the necessary solvent for mineral dissolution and acid formation [1]. Consequently, rocks in tropical regions with hot and humid conditions weather significantly faster than those in cold or arid environments [3]. In contrast, cold and dry climates are dominated by physical or mechanical weathering, such as frost action, because low temperatures and lack of water significantly slow down chemical decomposition. Therefore, chemical weathering is most effective in hot and humid climates.

Sources

1. [1] Certificate Physical and Human Geography , GC Leong (Oxford University press 3rd ed.) > Chapter 4: Weathering, Mass Movement and Groundwater > CHEMICAL WEATHERING > p. 37
2. [3] https://www.sciencedirect.com/science/article/abs/pii/S0883292721003139