Tawjihiya Bahrain (Secondary School Certificate) · Physics And Chemistry

Chemical Thermodynamics, Equilibria and Organic Chemistry

31 practice questions, each with the answer and an explanation.

Practise Chemical Thermodynamics, Equilibria and Organic Chemistry now

Random questions from this topic, one at a time. You see the answer and the explanation straight after each one.

All 31 questions

  1. What is the IUPAC name of the branched alkane with structural formula CH3-CH(CH3)-CH2-CH3?
  2. Which functional group is present in ethanol (CH3-CH2-OH)?
  3. According to Le Chatelier's Principle, what happens to the exothermic equilibrium N2(g) + 3 H2(g) <=> 2 NH3(g) (Delta H < 0) when temperature is increased?
  4. What is the pH of a 0.010 M aqueous solution of strong monoprotic hydrochloric acid (HCl)?
  5. Which reaction type converts ethene (C2H4) into bromoethane (C2H5Br) upon reaction with hydrogen bromide (HBr)?
  6. In a galvanic (voltaic) cell, at which electrode does oxidation occur?
  7. Calculate the molar mass of sulfuric acid (H2SO4). (Atomic masses: H = 1.0, S = 32.1, O = 16.0 g/mol)
  8. What is the oxidation state of sulfur in the sulfate ion (SO4^2-)?
  9. What happens to the rate of a chemical reaction when an appropriate positive catalyst is added?
  10. What is the conjugate base of the bicarbonate ion (HCO3^-)?
  11. Which of the following hydrocarbons is an alkyne possessing a carbon-carbon triple bond?
  12. How many moles of gas are present in a 44.8 L sample of an ideal gas at STP (0 degrees C and 1.0 atm)?
  13. Which law states that the total enthalpy change for a chemical reaction is independent of the pathway taken?
  14. What is the functional group present in ethyl ethanoate (CH3-COO-CH2-CH3)?
  15. What is the molecular geometry of a methane molecule (CH4) according to VSEPR theory?
  16. A reaction has a negative enthalpy change (Delta H < 0) and a positive entropy change (Delta S > 0). Under what conditions is the reaction spontaneous?
  17. What is the general molecular formula for non-cyclic alkanes?
  18. What is the color change observed when acidified potassium dichromate(VI) oxidizes a primary alcohol to an aldehyde?
  19. Which factor does NOT affect the position of chemical equilibrium according to Le Chatelier's Principle?
  20. What product is formed when propene (CH3-CH=CH2) reacts with water in the presence of an acid catalyst according to Markovnikov's rule?
  21. What is the standard cell potential E_cell_standard for a zinc-copper voltaic cell given standard reduction potentials: E_standard(Cu^2+/Cu) = +0.34 V and E_standard(Zn^2+/Zn) = -0.76 V?
  22. What is the half-life of a radioactive isotope if a 100-gram sample decays to 25 grams in 24 hours?
  23. Which of the following organic compounds will give a positive silver mirror test with Tollens' reagent?
  24. What is the concentration of hydroxide ions [OH-] in an aqueous solution with a pH of 11 at 25 degrees C?
  25. What type of intermolecular force is primarily responsible for the unusually high boiling point of water compared to hydrogen sulfide (H2S)?
  26. What is the hybridization of the carbon atoms in ethyne (HC#CH)?
  27. What is the half-life of a first-order chemical reaction if its rate constant is ?
  28. A solenoid of length 0.50 m has 1,000 tightly wound turns and carries a current of 2.0 A. What is the magnetic field strength inside the core? ()
  29. In electrochemistry, what mass of aluminum () is deposited at the cathode by a constant current of 9.65 A flowing through molten cryolite-alumina for 1,000 seconds? (…
  30. A monochromatic beam of X-rays with wavelength undergoes first-order Bragg diffraction from crystal planes at a glancing angle . What is the interplanar spacing…
  31. What is the standard Gibbs free energy change () for a reaction with equilibrium constant at ? (…

Keep practising

More Tawjihiya Bahrain (Secondary School Certificate) topics

All Tawjihiya Bahrain (Secondary School Certificate) practice →

Ready for the full Tawjihiya Bahrain (Secondary School Certificate) test?

Take a mock testTawjihiya Bahrain (Secondary School Certificate) hub
Chemical Thermodynamics, Equilibria and Organic Chemistry | GetMyMockTest