Understanding Oxalic Acid Properties

The video tutorial explains how to write the chemical formula for oxalic acid. It begins by identifying oxalic acid as an acid, which typically starts with hydrogen. The tutorial then discusses the absence of 'hydro' in the name, indicating the presence of three elements and the need for a polyatomic ion table. The oxalate ion is identified as C2O4 with a 2- charge. The tutorial concludes by balancing the charges, resulting in the formula H2C2O4.

What is the general rule for the beginning of acid formulas?

• They start with N.

• They start with H.

• They start with O.

• They start with C.

Why does oxalic acid not have 'hydro' in its name?

• It contains three elements.

• It contains two elements.

• It contains only one element.

• It contains four elements.

What does the 'ic' suffix in oxalic acid indicate?

• The presence of a metal.

• The presence of a polyatomic ion.

• The presence of a single element.

• The presence of a non-metal.

What is the significance of the polyatomic ion table in writing the formula for oxalic acid?

• It helps identify the number of hydrogen atoms.

• It helps identify the oxalate ion.

• It helps identify the charge of hydrogen.

• It helps identify the number of oxygen atoms.

Which table is used to find the oxalate ion?

• Periodic table

• Polyatomic ion table

• Metal ion table

• Non-metal ion table

What is the charge of the oxalate ion?

• 2-

• 1+

• 2+

• 1-

How many hydrogen atoms are needed to balance the charge of the oxalate ion?

• Four

• Three

• Two

• One

What is the formula for oxalic acid?

• HC2O4

• H2O

• HCl

• H2C2O4

What is the role of hydrogen in the formula of oxalic acid?

• To provide a negative charge

• To increase the molecular weight

• To balance the negative charge of the oxalate ion

• To decrease the molecular weight

What is the charge of hydrogen in the periodic table?

• 1-

• 1+

• 2-

• 2+