How to Calculate Salinity from Chlorinity in Seawater

Question:

The chlorinity of a sample of seawater is found to be 24 o/oo. Calculate the corresponding salinity value.

a. 24 ppt

b. 24 g/kg

c. 2.4 ppt

d. 2.4 g/kg

Answer:

Final answer:

To convert a chlorinity of 24 o/oo to salinity, multiply by 1.80655. The calculated salinity is around 43.36 g/kg, which is not an option provided in the question.

Explanation:

The chlorinity of a sample of seawater is correlated with its salinity. Salinity is typically measured in parts per thousand (ppt) or grams per kilogram (g/kg). There is a historical relationship that can be used to convert chlorinity to salinity, which says that for each part of chlorinity, there are roughly 1.80655 parts of salinity.

So, to calculate the corresponding salinity from a chlorinity of 24 o/oo:

• Multiply the chlorinity value by the conversion factor 1.80655.
• Salinity (g/kg) = Chlorinity (o/oo) × 1.80655.
• Salinity (g/kg) = 24 × 1.80655 = 43.3572 g/kg.

Therefore, the correct conversion of a chlorinity of 24 o/oo to salinity is roughly 43.36 g/kg, which is not represented by any of the options provided (a through d). It seems there may have been an error in the question as none of the given choices matches the calculation. However, if this is a straightforward calculation of salinity using chlorinity with a known conversion factor, the closest answer would be '24 g/kg' with the understanding that the precise value is actually around 43.36 g/kg.