Please select a subject first
Advertisements
Advertisements
The following data were obtained during the first order thermal decomposition of SO2Cl2 at a constant volume.
\[\ce{SO2Cl2_{(g)} -> SO2_{(g)} + Cl2_{(g)}}\]
| Experiment | Time/s–1 | Total pressure/atm |
| 1 | 0 | 0.5 |
| 2 | 100 | 0.6 |
Calculate the rate of the reaction when total pressure is 0.65 atm.
Concept: undefined >> undefined
In a pseudo first order hydrolysis of ester in water, the following results were obtained:
| t/s | 0 | 30 | 60 | 90 |
| [A]/mol L−1 | 0.55 | 0.31 | 0.17 | 0.085 |
Calculate the average rate of reaction between the time interval 30 to 60 seconds.
Concept: undefined >> undefined
Advertisements
The rate constant for a first order reaction is 60 s−1. How much time will it take to reduce the initial concentration of the reactant to its `1/16`th value?
Concept: undefined >> undefined
For the decomposition of azoisopropane to hexane and nitrogen at 543 K, the following data are obtained.
| t (sec) | P(mm of Hg) |
| 0 | 35.0 |
| 360 | 54.0 |
| 720 | 63.0 |
Calculate the rate constant.
Concept: undefined >> undefined
The time required for 10% completion of a first order reaction at 298 K is equal to that required for its 25% completion at 308 K. If the value of A is 4 × 1010 s−1. Calculate k at 318 K and Ea.
Concept: undefined >> undefined
Write any two characteristics of chemisorption.
Concept: undefined >> undefined
Why are powdered substances more effective adsorbents than their crystalline forms?
Concept: undefined >> undefined
Distinguish between the meaning of the terms adsorption and absorption. Give one example of.
Concept: undefined >> undefined
What is the difference between physisorption and chemisorption?
Concept: undefined >> undefined
Give reason why a finely divided substance is more effective as an adsorbent.
Concept: undefined >> undefined
What are the factors which influence the adsorption of a gas on a solid?
Concept: undefined >> undefined
Discuss the effect of temperature on the adsorption of gases on solids.
Concept: undefined >> undefined
In the series Sc (Z = 21) to Zn (Z = 30), the enthalpy of atomization of zinc is the lowest, i.e., 126 kJ mol−1. Why?
Concept: undefined >> undefined
Which of the 3d series of the transition metals exhibits the largest number of oxidation states and why?
Concept: undefined >> undefined
The `E_((M^(2+)//M))^Θ` value for copper is positive (+0.34 V). What is possibly the reason for this? (Hint: consider its high ΔaHΘ and low ΔhydHΘ)
Concept: undefined >> undefined
How would you account for the irregular variation of ionization enthalpies (first and second) in the first series of the transition elements?
Concept: undefined >> undefined
Why is the highest oxidation state of a metal exhibited in its oxide or fluoride only?
Concept: undefined >> undefined
Which is a stronger reducing agent, Cr2+ or Fe2+ and why?
Concept: undefined >> undefined
Calculate the ‘spin only’ magnetic moment of \[\ce{M^{2+}_{ (aq)}}\] ion (Z = 27).
Concept: undefined >> undefined
Explain why Cu+ ion is not stable in aqueous solutions?
Concept: undefined >> undefined
