Which one among the following compounds has same equivalent weight and molecular weight ?

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Q: 11 (CDS-I/2015)

Which one among the following compounds has same equivalent weight and molecular weight ?

question_subject: 

Science

question_exam: 

CDS-I

stats: 

0,19,24,14,6,4,19

keywords: 

{'molecular weight': [0, 0, 1, 1], 'same equivalent weight': [0, 0, 0, 1], 'compounds': [0, 0, 0, 3], 'cacl2': [0, 0, 0, 1], 'nacl': [0, 0, 1, 0], 'h2s04': [0, 0, 0, 2]}

Option 1: H2SO4 (sulfuric acid) has a molecular weight of 98.09 g/mol and an equivalent weight of 49.05 g/eq. Therefore, H2SO4 does not have the same equivalent weight and molecular weight.

Option 2: CaCl2 (calcium chloride) has a molecular weight of 110.98 g/mol. To determine the equivalent weight, we need to consider that calcium has a valency of 2 (since it forms 2 ions in this compound) and chloride has a valency of 1. Therefore, the equivalent weight of CaCl2 is 55.49 g/eq. Since the molecular weight and equivalent weight for CaCl2 are not the same, this compound does not fulfill the given criteria.

Option 3: Na2CO3 (sodium carbonate) has a molecular weight of 105.99 g/mol. The carbonate ion (CO3^2-) has a valency of 2, so the equivalent weight of Na2CO3 is 52.995 g/eq. Therefore, Na2CO3 does not have the same equivalent weight and molecular weight.

Option 4: NaCl (sodium chloride) has a molecular weight of