Some Basic Concepts Of Chemistry Question 88
Question: 12 g of Mg (atomic mass 24) will react completely with hydrochloric acid to give
Options:
A) One mol of $ H _2 $
B) 1/2 mol of $ H _2 $
C) 2/3 mol of $ O _2 $
D) both 1/2 mol of $ H _2 $ and 1/2 mol of $ O _2 $
Show Answer
Answer:
Correct Answer: B
Solution:
[b] $ \underset{\begin{smallmatrix} 1,mole \\ \frac{1}{2}mole \end{smallmatrix}}{\mathop{Mg}},+2HCl\to MgCl _2+\underset{\begin{smallmatrix} ,1,mole \\ ,\frac{1}{2}mole(12g,of,Mg=\frac{1}{2}mol) \end{smallmatrix}}{\mathop{H _2}},\uparrow $
