🔍 Key Concepts

• Conductivity vs. salt (ion) concentration in water and how salinometers use this relationship • Effect of temperature on electrical conductivity of a solution • Why boiler feed water purity is monitored with a conductivity/salinity cell

💭 Think About

• If you add more dissolved salt (ions) to pure water, what happens to its ability to conduct electricity? Increase or decrease? • When the same saline solution is heated, does its electrical conductivity usually increase or decrease with temperature? • Why would a salinometer used on a boiler feed system need (or not need) a temperature correction circuit?

✅ Before You Answer

• Be clear whether more salt means higher or lower conductivity • Decide whether conductivity changes with temperature for salt solutions used in salinometers • Check which option correctly combines both the salt–conductivity relationship and the need for temperature correction