Q1: The McCabe Δ L law states that the

ANS:C - linear crystal growth rate does not depend on the crystal size.

In typical crystallization processes, the growth rate of crystals often depends on various factors, including the degree of supersaturation, temperature, and agitation level. However, the statement "linear crystal growth rate does not depend on the crystal size" is not generally accurate. In fact, the growth rate of crystals can be influenced by the crystal size. Larger crystals may have different growth rates compared to smaller crystals due to factors such as surface area-to-volume ratio, solute concentration gradients near the crystal surface, and mass transport limitations. For example, larger crystals may experience slower growth rates if mass transport of solute to the crystal surface becomes limited due to diffusion or fluid flow constraints. On the other hand, smaller crystals may exhibit faster growth rates because of their higher surface area-to-volume ratio, allowing for more efficient solute uptake. Therefore, while crystal size is just one of many factors affecting crystal growth rates, it can indeed play a significant role in determining the kinetics of crystallization processes.