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Question 20

How many grammes of hydrogen gas will be liberated when 6g of magnesium ribbon dissolves in 500cm3 of 6mol/dm3 of hydrochloric acid according to the equation? Mg + 2HCl → MgCl2 + H2 (Mg=24, cl=35.5, H=1)

  • A.0.7g
  • B.0.5g
  • C.0.12g
  • D.1.2g
Objective

Question details

Exam body
NDA
Subject
Chemistry
Year
2013/2014
Question no.
#20
Type
Objective
Previous · Q19In the redox reaction: 2Fe 2e + Cl 2 → 2Fe 3e + 2e Next · Q21 nCH 2 =CH 2 ⟶ (-CH 2 -CH 2 -) n The above equation (at 1500atm and 473K with O 2…

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