Chemistry > 2005 > 13
WASSCE
What volume of hydrogen at s.t.p. will be produced when 48g of magnesium reacts completely with dilute hydrochloric acid according to the following equation?
Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g)
[Mg = 24.1 mole of hydrogen occupies 22.4 dm3 at s.t.p.]
Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g)
[Mg = 24.1 mole of hydrogen occupies 22.4 dm3 at s.t.p.]
A.
11.2 dm3
B.
22.4 dm3
C.
33.6 dm3
D.
44.8 dm3
Answer: D
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