NEET2015ChemistrySome Basic Concepts of ChemistryActual

Which of the following is correctly arranged in order of increasing weight?

Options

A0.0105 equivalent of H ₂ C ₂ O ₄ 2 H ₂ O 0.625 ~g of Fe 0.006 ~g atom of Ag 6.0 10²¹ atoms of Zn
B0.625 g of Fe 0.0105 equivalent of H ₂ C ₂ O ₄ 2 H ₂ O 6.0 10²¹ atoms of Zn 0.006 g atom of Ag
C0.625 g of Fe 6.0 10²¹ atoms of Zn 0.006 ~g atom of Ag 0.0105 equivalent of H ₂ C ₂ O ₄ 2 H ₂ O
D0.0105 equivalent of H ₂ C ₂ O ₄ 2 H ₂ O 0.006 ~g atom of Ag 6.0 10²¹ atoms of Zn 0.625 ~g of Fe

Correct answer

C. 0.625 g of Fe 6.0 10²¹ atoms of Zn 0.006 ~g atom of Ag 0.0105 equivalent of H ₂ C ₂ O ₄ 2 H ₂ O

Step-by-step solution

aligned & 0.625 ~g Fe & 0.0105 eq. of H ₂ C ₂ O ₄ 2 H ₂ O =0.0105 63 & =0.66 ~g ( Eq. wt =63) & 6 10²¹ atoms of Zn = 6 10²¹ 6.023 10²³ 65=0.647 ~g aligned 0.006 g atom of Ag =0.006 108=0.648 ~g Increasing order of weight Fe Zn Ag H ₂ C ₂ O ₄ 2 H ₂ O

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