Question

Which pair of formulas represents the same compound? ch3ch2cho; ch3ch2cooh ch3coh(ch32; (ch3 3coh c2h5oh; ch3och3 (ch32co; ch3och3?

Answer 1

CH3COH(CH3)2; (CH3)3COH is the answer. Please let me know if this helps.

Answer 2

Answer: The correct answers are $CH_3COH(CH_3)_2;(CH_3)_3COH$ and $C_2H_5OH;CH_3OCH_3$

Explanation:

The formulas having same compound will have same number of individual atoms.

From the given options:

• Option 1: $CH_3CH_2CHO;CH_3CH_2COOH$

In compound 1:

Number of carbon atoms = 3

Number of hydrogen atoms = 6

Number of oxygen atoms = 1

In compound 2:

Number of carbon atoms = 3

Number of hydrogen atoms = 6

Number of oxygen atoms = 2

As, number of oxygen atoms in both the compounds are not same. Thus, these two do not represent same compounds.

• Option 2: $CH_3COH(CH_3)_2;(CH_3)_3COH$

In compound 1:

Number of carbon atoms = 4

Number of hydrogen atoms = 10

Number of oxygen atoms = 1

In compound 2:

Number of carbon atoms = 4

Number of hydrogen atoms = 10

Number of oxygen atoms = 1

Here, all the atoms of every element is same. Thus, these two compounds represent same compound.

• Option 3: $C_2H_5OH;CH_3OCH_3$

In compound 1:

Number of carbon atoms = 2

Number of hydrogen atoms = 6

Number of oxygen atoms = 1

In compound 2:

Number of carbon atoms = 2

Number of hydrogen atoms = 6

Number of oxygen atoms = 1

Here, all the atoms of every element is same. Thus, these two compounds represent same compound.

• Option 4: $(CH_3)_2CO;CH_3OCH_3$

In compound 1:

Number of carbon atoms = 3

Number of hydrogen atoms = 6

Number of oxygen atoms = 1

In compound 2:

Number of carbon atoms = 2

Number of hydrogen atoms = 6

Number of oxygen atoms = 1

As, number of carbon atoms in both the compounds are not same. Thus, these two do not represent same compounds.

Hence, the pairs which represent same compounds are $CH_3COH(CH_3)_2;(CH_3)_3COH$ and $C_2H_5OH;CH_3OCH_3$