Questions 1. In an ion-exchange water softener, hard-water ions such as Ca2, Mg+

Question

Questions 1. In an ion-exchange water softener, hard-water ions such as Ca2, Mg+, and Fe are replaced by sodium ions, Na". How do the added Na ions influence the behavior of soaps and detergents? a. Na ions decrease their cleaning effectiveness. b. Na ions increase their cleaning effectiveness. c. Na ions have no effect on their cleaning effectiveness. Explain your answer 2. Which would be the best emulsifier of soil if soft water (no Ca?+ ions, Mg ions, and so on) were c. Both would be about the same. used? a. A soap Explain your answer b. A detergert 3. The soil found in most d irty ovens consists primarily of fats or oils. Some popular oven cleaners are solutions of strong base. After the cleaner is applied, it is allowed to sit for some time. Much of the baked-on grease and oil then wipes away because it has been partially converted into which of the following? a. Soap d. CO2 gas c. Carbon b. Detergent Explain your answer:

Explanation / Answer

1) The replacement of the Ca2+ , Mg2+ and Fe3+ with the Na+ ions increase their cleaning effectiveness. It is due to the fact that the soap and detergents combine eith the earlier ions to form a coagulated curd. This insoluble sticky curd doesn't allow soap and detergent to fully dissolve in the water and decrease their cleaning action while there is no such problrm in case of Sodium.

Related Questions

Navigate

• Browse (All)
• Browse Q
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.