Consider the reaction represented by the following equation: Zn(s) + 2HCI(aq) → ZnCI2(aq) + H2(g) what volume of hydrogen gas is produced at s.t.p. when 3.25 g of zinc reacts with excess dilute HCI? [Zn = 65, Molar gas volume at s.t.p. = 22.4 dm-3]
a
1.12 dm3
b
2.24dm3
c
4.48dm3
d
8.96dm3
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TOMstar
4 years ago
No in moles= mass/ Rmm
=3.25/ 65
=0.05mol
n=vol/molar gas vol at stp
0.05= X/22.4
X= 22.4 *0.05
=1.12dm³

