Podcast
Questions and Answers
What is the primary reason 11C is unstable and radioactive?
What is the primary reason 11C is unstable and radioactive?
- Its n/p ratio is too high
- It has an odd number of neutrons
- Its n/p ratio is too low (correct)
- It has an odd number of protons
What is a characteristic of a second-order reaction?
What is a characteristic of a second-order reaction?
- The rate constant increases with increasing temperature
- The rate is proportional to the square of the rate constant
- The rate is proportional to the initial concentration
- The half-life is independent of the initial concentration (correct)
What is the pH of neutral water at 25°C?
What is the pH of neutral water at 25°C?
- 8.0
- 7.0 (correct)
- 9.2
- 6.4
What type of emission would lead to stability in 11C?
What type of emission would lead to stability in 11C?
What is the effect of increasing temperature on the rate of a second-order reaction?
What is the effect of increasing temperature on the rate of a second-order reaction?
What is the result of an n/p ratio that is too high?
What is the result of an n/p ratio that is too high?
What is the nature of the autodissociation of water and how does the dissociation constant Kw change with increasing temperature?
What is the nature of the autodissociation of water and how does the dissociation constant Kw change with increasing temperature?
What is the role of Al3+ ions in a 0.1 M solution of AlCl3 with a pH of 5.5?
What is the role of Al3+ ions in a 0.1 M solution of AlCl3 with a pH of 5.5?
What is emitted during the chain reaction in a nuclear power plant?
What is emitted during the chain reaction in a nuclear power plant?
What is the relationship between bond making and energy?
What is the relationship between bond making and energy?
What is true about a reaction at equilibrium with a very large Keq?
What is true about a reaction at equilibrium with a very large Keq?
Which of the following is a redox reaction?
Which of the following is a redox reaction?
What is the type of bonding in AgCl?
What is the type of bonding in AgCl?
What is the effect of adding a small amount of HCl to an aqueous solution containing hydrogen fluoride and fluoride ions?
What is the effect of adding a small amount of HCl to an aqueous solution containing hydrogen fluoride and fluoride ions?
What is the effect of a catalyst on a chemical reaction?
What is the effect of a catalyst on a chemical reaction?
What is the significance of ∆Hfo?
What is the significance of ∆Hfo?
Why is isotopic enrichment of uranium necessary for use in nuclear power reactors and nuclear weapons?
Why is isotopic enrichment of uranium necessary for use in nuclear power reactors and nuclear weapons?
What type of reaction is represented by the equation Pb2+ (aq) + 2Cl- (aq) → PbCl2 (s)?
What type of reaction is represented by the equation Pb2+ (aq) + 2Cl- (aq) → PbCl2 (s)?
