pressurisation than monovalent anions. The gradient of the monovalent ions were similar to each other, indicating that versus temperature is not necessarily dependent on ion surface ΔQ charge density, size or shape. This suggests that the rate at which ionic solutions absorb heat upon pressurisation is dependent on the charge of the ion. The effect different phosphate concentrations had on versus temperature is shown ΔQ in and focuses lower phosphate concentrations (0 50 mM) figures 5.7a 5.7b. Figure 5.7a – and focuses on higher phosphate concentrations (50 1000 mM). The gradient of figure 5.7b – versus temperature is dependent on phosphate concentration. The versus phosphate ΔQ ΔQ concentration at certain temperatures is given in and It should be noted that figures 5.8a 5.8b. the relationship between and phosphate concentration is not linear at any of the ΔQ temperatures studied which suggests that cannot be explained in terms of a volume ΔQ excluded effect caused by increasing phosphate concentration as this would give a linear relationship.
pressurisation than monovalent anions. The gradient of the monovalent ions were similar to each other, indicating that ΔQ versus temperature is not necessarily dependent on ion surface charge density, size or shape. This suggests that the rate at which ionic solutions absorb heat upon pressurisation is dependent on the charge of the ion. The effect different phosphate concentrations had on ΔQ versus temperature is shown in figures 5.7a and 5.7b. Figure 5.7a focuses lower phosphate concentrations (0 – 50 mM) and figure 5.7b focuses on higher phosphate concentrations (50 – 1000 mM). The gradient of ΔQ versus temperature is dependent on phosphate concentration. The ΔQ versus phosphate concentration at certain temperatures is given in figures 5.8a and 5.8b. It should be noted that the relationship between ΔQ and phosphate concentration is not linear at any of the temperatures studied which suggests that ΔQ cannot be explained in terms of a volume excluded effect caused by increasing phosphate concentration as this would give a linear relationship.
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