Teacha
  • Courses
  • Mock Exams
  • For Tutors
  • For Schools
  • Pricing
Log InStart Free
  1. Past Questions
  2. /
  3. UNN
  4. /
  5. Chemistry
  6. /
  7. 2012/2013
  8. /
  9. Q9
Question 9

In which of the following is the change in entroypy positive?

  • A.2H2O(g) + SO2(g) --> 2H2O(l) + 3S(s)
  • B.H2O(s) ---> H2O(l)
  • C.N2(g) + 3H2(g) ---> 2NH3(g)
  • D.Cu2+ + Fe(s) ---> Fe3+ + Cu(s)
Objective

Question details

Exam body
UNN
Subject
Chemistry
Year
2012/2013
Question no.
#9
Type
Objective
Previous · Q8An example of a suspension of solid particles in a gas is Next · Q10 2SO 2(g) + O 2(g) 2SO 3(g) ∆H = -ve The formation of SO 3 in the equation above…

More from this paper

  • Q5Which of the following is a double salt?
  • Q6Find the value of n in the equation XO n- 3 + 4H + + 3e - ---> XO + 2H 2
  • Q7Corrosion in metals is an example of
  • Q11When 238 92 U emits and x-ray and a B-ray, the product X has a mass number and…
  • Q12The producer gas is a mixture of
  • Q13The IUPAC name of the compound below is H 3 CCH(CH 3 )CHCHCH 3
See all Chemistry 2012/2013 questions
Teacha

Africa's learning & exam readiness platform. Built for students, tutors, and schools.

Platform

  • Courses
  • Mock Exams
  • Past Questions

For You

  • I'm a Tutor
  • I'm a School
  • Pricing

© 2025 Teacha. Built for African learners, tutors, and schools. Teacha is not affiliated with WAEC, NECO, or JAMB. All past questions are sourced from publicly available materials.

Privacy PolicyTerms of UseCookie Policy