Calcium and Hypochlorite Concepts

The video tutorial explains how to write the formula for calcium hypochlorite. It begins by identifying calcium as a metal with the symbol 'Ca' and introduces hypochlorite as a polyatomic ion, 'ClO-'. The tutorial discusses the ionic nature of the compound, emphasizing the need to balance charges. Calcium, with a 2+ charge, requires two hypochlorite ions, each with a 1- charge, to achieve a neutral compound. The final formula is presented as Ca(ClO)2, with a note on possible variations in the order of elements. The video concludes with a brief summary of the process.

What is the main objective of the video?

• To explain the uses of calcium hypochlorite

• To compare calcium hypochlorite with other compounds

• To write the formula for calcium hypochlorite

• To discuss the history of calcium hypochlorite

What is the symbol for calcium?

• Co

• C

• Cl

• Ca

What type of ion is hypochlorite?

• Anion

• Cation

• Polyatomic ion

• Monatomic ion

What is the ionic charge of calcium?

• 1+

• 2-

• 2+

• 1-

How many hypochlorite ions are needed to balance the charge of one calcium ion?

• One

• Two

• Three

• Four

What is the formula for calcium hypochlorite?

• Ca2ClO

• Ca(ClO)2

• CaClO2

• CaClO

In some representations, which element is written first in the hypochlorite ion?

• Calcium

• Chlorine

• Hydrogen

• Oxygen

What is a common tool provided in general chemistry to help with polyatomic ions?

• Molecular model kit

• Chemical equation chart

• Periodic table

• Table of polyatomic ions

Who is the presenter of the video?

• Dr. D

• Dr. C

• Dr. A

• Dr. B