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  • In the following questions a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct option out of the choices given below each question. Assertion (A): The empirical mass of ethene is half of its molecular mass.

In the following questions a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct option out of the choices given below each question.

Assertion (A): The empirical mass of ethene is half of its molecular mass.

Reason (R): The empirical formula represents the simplest whole number ratio of various atoms present in a compound.

(i) Both A and R are true, and R is the correct explanation of A.

(ii) A is true but R is false.

(iii) A is false but R is true.

(iv) Both A and R are false.

Answers (1)

The answer is the option (i) Both A and R are true, and R is the correct explanation of A.

Explanation: Molecular formula = n × Empirical formula mass

Empirical formula of ethene = CH_{2}

Empirical formula mass of ethene = 14 amu

=\frac{1}{2}\times mass\; of\; ethene

Empirical formula shows that ethene has (C : H)= 1:2

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