Alkanes and Their Properties

The video tutorial explains how to write the chemical formula for butane, an alkane composed of carbon and hydrogen with single bonds. It details the structure of butane, showing four carbon atoms surrounded by ten hydrogen atoms, and describes its tetrahedral molecular geometry. The tutorial also demonstrates the calculation of butane's chemical formula, C4H10, using a general formula applicable to all alkanes.

What type of bonds are present in alkanes like butane?

• Double bonds

• Ionic bonds

• Triple bonds

• Single bonds

How many hydrogen atoms are present in the chemical formula of butane?

• 8

• 14

• 10

• 12

What is the shape of the molecular geometry around each carbon atom in butane?

• Bent

• Tetrahedral

• Linear

• Trigonal planar

In the structural representation of butane, how many carbon atoms are there?

• 5

• 4

• 3

• 2

What is the general formula used to calculate the number of hydrogen atoms in alkanes?

• C_nH_3n

• C_nH_2n

• C_nH_2n+2

• C_nH_n

If an alkane has 4 carbon atoms, how many hydrogen atoms will it have according to the general formula?

• 6

• 8

• 10

• 12