Question on: WAEC Chemistry - 1999
What volume of hydrogen is produced at s.t.p. When 2.60 g of zinc reacts with excess HCI according to the following equation? Zn(s) + 2HCI(aq) → ZnCI 2(aq) + H2(g) [Zn = 65; 1 mole of a gas occupies 22.4dm3 at s.t.p]
A
0.040dm 3
B
0.896dm 3
C
5.82dm 3
D
8.62dm 3
Ask EduPadi AI for a detailed answer
Correct Option: B
Zn + 2HCI → ZnCI2 + H2; 65g of Zn produces 22.4 dm3 of H2; .: 2.6g of Zn will produce = 2.6/65 x 22.4 = 0.896 dm3
Add your answer
Please share this, thanks!
No responses