Teacha
  • Courses
  • Mock Exams
  • For Tutors
  • For Schools
  • Pricing
Log InStart Free
  1. Past Questions
  2. /
  3. UNN
  4. /
  5. Chemistry
  6. /
  7. 2008/2009
  8. /
  9. Q5
Question 5

Given that the pH of a solution of KOH is 12, what is the concentration of the OH ions?

  • A.0.01mol/dm3
  • B.1 x 10-12 mol/dm3
  • C.1 x 10-14 mol/dm3
  • D.1 x 10-7 mol/dm3
Objective

Question details

Exam body
UNN
Subject
Chemistry
Year
2008/2009
Question no.
#5
Type
Objective
Previous · Q4The major reason why chemical reaction occurs among elements is that they have… Next · Q6 Which of the following salt has a pH less than 7?

More from this paper

  • Q1What are the values of p, q , r and s respectively in the equation? pCH 4 + qO 2…
  • Q2KHCO 3 is contaminated with K 2 CO 3 as impurity. If 2.5g of the impure KHCO 3…
  • Q3The partial pressure of N 2 in a container at 50°C in which there are 0.30 mole…
  • Q7In which of the following reactions does hydrogen peroxide act as reducing…
  • Q8Temporary hardness of water is removed by the use of the following EXCEPT
  • Q9Hydration of ions in addition is associated with
See all Chemistry 2008/2009 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