Some Basic Concepts Of Chemistry Question 267

Question: 1.5 mol of O2 combine with Mg to form oxide MgO . The mass of Mg (at. mass 24) that has combined is [KCET 2001]

Options:

A) 72 g

B) 36 g

C) 48 g

D) 24 g

Show Answer

Answer:

Correct Answer: A

Solution:

Mg1mole,+12O20.5mole,MgO

0.5 mole of oxygen react with 1 mole of Mg 1.5 mole of oxygen react with 1.50.5=3 mole 24×3=72gm .



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