Sodium and Hydrogen Phosphate Concepts

The video tutorial explains how to write the formula for sodium hydrogen phosphate, also known as disodium hydrogen phosphate. It begins by identifying sodium on the periodic table and introduces hydrogen phosphate as a polyatomic ion. The tutorial discusses the ionic nature of the compound, emphasizing the importance of charge balancing. Sodium, with a +1 charge, and hydrogen phosphate, with a -2 charge, are combined to form Na2HPO4, ensuring the net charge is zero. The video concludes with a brief closing statement.

What is another name for sodium hydrogen phosphate?

• Monosodium phosphate

• Disodium hydrogen phosphate

• Sodium dihydrogen phosphate

• Trisodium phosphate

What is the element symbol for sodium?

• So

• S

• Sn

• Na

What type of ion is hydrogen phosphate?

• Anion

• Polyatomic ion

• Monatomic ion

• Cation

What is the chemical formula for hydrogen phosphate?

• HPO4

• HPO3

• H2PO4

• H3PO4

What is the charge of a sodium ion?

• 1+

• 1-

• 2-

• 2+

What is the charge of the hydrogen phosphate ion?

• 3-

• 2+

• 2-

• 1+

How many sodium ions are needed to balance the charge of one hydrogen phosphate ion?

• One

• Two

• Three

• Four

What is the final formula for sodium hydrogen phosphate?

• NaH2PO4

• Na3PO4

• Na2HPO4

• NaPO4