Post Utme Chemistry Questions
Question 71:
Which of the following statements is correct about the following system at equilibrium? \(P C L_{\text {iel }}\) \(\mathrm{PCl}_{\text {ice }}+\mathrm{Cl}_{\text {wal }} \Delta \mathrm{H}\) positive ____________
- A Increase in temperature increases the yield of \(\mathrm{PCl}, \)
- B \(\mathrm{PCl}\), is less stableat high pressures.
- C The concentrations of \(\mathrm{PCl}_{1}\) and \(\mathrm{Cl}_{4}\) increase at higher pressures. \(\quad\)
- D Decrease In pressure favours the forward reaction.
Question 72:
Isotopes of a given element have the same ____________
- A Neutron
- B Atomic numbe
- C Chemical properties.
Question 73:
Which of the following statements is correct about catalysts? <br/>They ____________
- A Alter the rate of chemical reactions
- B Are generally specific in action.
- C Remain changed chemically at the end of the reaction.
- D Shift the equilibrium position in a reversible reaction.
Question 74:
If the change in free energy \((\Delta G)\) of a reaction is negative, it can be deduced that the reaction will ____________
- A Not proceed in the direction indicated
- B Be reversible.
- C Not occur at room temperature.
- D Be feasible.
Question 75:
Which of the following denotes an alpha particle?
- A 'n
- B \({ }^{2} \mathrm{He}\)
- C "e
- D "Be