Homework Help

What is the formula name for Ca2+ and NH4+?

user profile pic

animalover4546 | Student, Undergraduate | (Level 2) Honors

Posted October 27, 2012 at 7:22 PM via web

dislike 0 like

What is the formula name for Ca2+ and NH4+?

1 Answer | Add Yours

user profile pic

jerichorayel | College Teacher | (Level 1) Senior Educator

Posted October 28, 2012 at 6:20 AM (Answer #1)

dislike 1 like

Ions are formed when an atom or a molecule either lose or gains an electron. When an ion is a positively charged it is called a cation. When it is negatively charged it is an anion. Ca2+ (calcium ion) and NH4+ (ammonium ion) are cations. 

These ions are produced in a solution. For example Calcium Chloride, CaCl2. In solution they form Ca2+ and Cl- ions

CaCl2 ---> Ca2+  + 2 Cl-

another example: NH4Cl (ammonium chloride)

NH4Cl ---> NH4+ + Cl-

 

It is always a fact that when an ionic substance is dissolved in water, cations ans anions are present.

Join to answer this question

Join a community of thousands of dedicated teachers and students.

Join eNotes