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When the same amount of zinc is treated separately with excess of sulphuric acid and excess of sodium hydroxide, the ratio of volumes of hydrogen evolved is a. 1 : 1 b. 1 : 2 c. 2 : 1 d. 9 : 4

When the same amount of zinc is treated separately with excess of sulphuric acid and excess of sodium hydroxide, the ratio of volumes of hydrogen evolved is
a. 1 : 1
b. 1 : 2
c. 2 : 1
d. 9 : 4

Grade:11

1 Answers

Kevin Nash
askIITians Faculty 332 Points
9 years ago
Sol. The balanced chemical reaction of zinc with sulphuric acid and NaOH are Zn + H2SO4→ ZnSO4 + H2 (g) ↑ Zn + 2NaOH + 2H2O →Na[Zn(OH)4] + H2 (g) ↑ Since one mole of H2 (g) is produced per mole of zinc with both sulphuric acid and NaOH respectively, hydrogen gas is produced in the molar ratio of 1 : 1 in the above reactions.

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