Question

Which of the following statements is (are) false? Explain why the statement(s) is (are) false.

Short answer

a. The given molecular structure is an isomer of the pentanoic acid which makes the statement true.

b. The given molecular structure is an isomer of the$2-methyl-3-pen\tan one$ which makes the statement true.

c. The given molecular structure 1-epoxy-propane is an isomer of "$2-pen\tan ol$" which makes the statement true.

d. The given molecular structure "$3-buten-2-ol$" is not an isomer of the "$2-butenal$ "which makes the statement false.

e. The given molecular structure propan-1-amine is an isomer of the "trimethyl-amine" which makes the statement true.

Step-by-step solution

Confirm the structure a

(a)

To confirm whether the given structure is an isomer of the pentanoic:$acid\left(C_5{H}_{10}{O}_2\right)$

One would abide by the rule of structural isomerism and check if the positions of atoms have changed without changing the total number of atoms in the given compounds.$\left(C_5{H}_{10}{O}_2\right)$

Since the given molecular structure consists of the same total of atoms as the "pentanoic acid"

one would conclude that the given molecular structure is methyl-butanoate is an isomer of the "pentanoic acid":

Therefore, the given molecular structure is an isomer of the pentanoic acid which makes the statement true.

Confirm the structure b:

(b)

To confirm whether the given structure is an isomer of the$2-methyl-3-pen\tan one$$\left(C_6{H}_{12}O\right)$ :

One would abide by the rule of structural isomerism and check if the positions of atoms have changed without changing the total number of atoms in the given compounds.$\left(C_6{H}_{12}O\right)$

Since the given molecular structure consists of the same total of atoms as the "$2-methyl-3-pen\tan one$"

one would conclude that given molecular structure4-methyl-pentanal is an isomer of the "$2-methyl-3-pen\tan one$ ":

Therefore, the given molecular structure is an isomer of the $2-methyl-3-pen\tan one$which makes the statement true.

Confirm the structure C

(c)

To confirm whether the given structure is an isomer of the$\left(C_5{H}_{12}O\right)$:

One would abide by the rule of structural isomerism and check if the positions of atoms have changed without changing the total number of atoms in the given compounds.$\left(C_6{H}_{12}O\right)$

Since the given molecular structure consists of the same total of atoms as the "2-pethanol " one would conclude that given molecular structure 1-epoxy-propane is an isomer of the "2-pethanol ".

Therefore, the given molecular structure 1-epoxy-propane is an isomer of "2-pentanol " which makes the statement true.

Confirm the structure d:

(d)

To confirm whether the given structure is an isomer of the $\left(C_4{H}_{6}O\right)$:

One would abide by the rule of structural isomerism and check if the positions of atoms have changed without changing the total number of atoms and bonds in the given compounds $\left(C_4{H}_{6}O\right)$.

Since, the given molecular structure " $3-buten-2-ol$" $\left(C_4{H}_{6}O\right)$consists of the same total of carbon and oxygen atoms but different number of hydrogen atoms and bonds as the "2-bulena " $\left(C_4{H}_{6}O\right)$.

One would conclude that given molecular structure " 3-buten-2-ol" is not an isomer of the "2-butenal ":

Therefore, the given molecular structure "3-buten-2-ol " is not an isomer of the "2-butenal "which makes the statement false.

Confirm the structure e

(e)

To confirm whether the given structure is an isomer of the trimethyl-amine:$\left(C_3{H}_{9}N\right)$

One would abide by the rule of structural isomerism and check if the positions of atoms have changed without changing the total number of atoms in the given compounds$\left(C_3{H}_{9}N\right)$.

Since the given molecular structure consists of the same total of atoms as the "trimethyl-amine"

one could conclude that given molecular structure propan-1-amine is an isomer of the "trimethyl-amine":

Therefore, the given molecular structure propan--amine is an isomer of the "trimethyl-amine" which makes the statement true.