The molecular weight and equivalent weight of which one of the following is the same?

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Q: 42 (NDA-I/2008)
The molecular weight and equivalent weight of which one of the following is the same?

question_subject: 

Science

question_exam: 

NDA-I

stats: 

0,17,8,4,4,0,17

keywords: 

{'molecular weight': [0, 0, 1, 1], 'equivalent weight': [0, 0, 0, 1], 'h2c2o4': [0, 0, 1, 0], 'h2so4': [0, 0, 1, 1], 'naoh': [0, 0, 1, 9]}

The question asks us to identify the compound where the molecular weight and equivalent weight are the same.

Molecular weight refers to the total mass of the molecules in a compound. It is determined by adding up the individual atomic masses of the elements present in the compound.

Equivalent weight, on the other hand, is the mass that is equivalent to one mole of the compound in a chemical reaction. It is calculated by dividing the molecular weight by the number of equivalents of a particular species in a reaction.

Looking at the options provided:

1) H2SO4 - The molecular weight of sulfuric acid (H2SO4) is 98.09 g/mol, and its equivalent weight is also 98.09 g/mol. Therefore, this option is not the correct answer.

2) KMnO4 - The molecular weight of potassium permanganate (KMnO4) is 158.034 g/mol, and its equivalent weight is different from the molecular weight. Therefore, this option is not the correct answer.

3) H2C2O4 - The molecular weight of oxalic acid (H2C2O4) is 90.034 g/mol, and its equivalent weight is different from the molecular weight. Therefore, this option is