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11

When sugar is dissolve in tea, the reaction is accomplished by?

  • A. positive change
  • B. negative entropy change
  • C. no entropy change
  • D. a minimum entropy change
View Answer & Discuss (35) JAMB 2015
12

N\(_2\)O\(_4\) ⇔ 2NO\(_2\)          (Δ = -ve)

From the reaction above, which of these conditions would produce the highest equilibrium yield for N\(_2\)O\(_4\)?

  • A. Low temperature and high pressure
  • B. Low temperature and low pressure
  • C. high temperature and low pressure
  • D. high temperature and high pressure
View Answer & Discuss (52) JAMB 2022
13

The reactions below represent neutralization reaction, in which of them is the value of ΔH highest?

 

  • A. CH\(_3\)CH\(_2\)COOH + KOH → CH\(_3\)CH\(_2\)COOK + H\(_2\)O
  • B. NH\(_4\)OH + HCL → NH\(_4\) + H\(_2\)O
  • C. NaOH + HCL → NaCL + H\(_2\)O
  • D. CH\(_3\)COOH + NaOH → CH\(_3\)COONa + H\(_2\)O
View Answer & Discuss (5) JAMB 2022
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14

When heat is absorbed during a chemical reaction, the reaction is said to be

  • A. thermodynamic
  • B. exothermic
  • C. isothermal
  • D. endothermic
View Answer & Discuss (3) JAMB 2022
15

In the graph above, y represents 

  • A. endothermic reaction
  • B. activation energy
  • C. exothermic reaction
  • D. ionization energy
View Answer & Discuss (4) JAMB 2024
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