Bissoy.com
Doctors Medicines MCQs Q&A

The polymerization of methacrylonitrile using lithium metal in liquid ammonia takes place at a much faster rate than the lithium amide (LiNH2) in liquid ammonia. State true or false.

The polymerization of methacrylonitrile using lithium metal in liquid ammonia takes place at a much faster rate than the lithium amide (LiNH2) in liquid ammonia. State true or false. Correct Answer true

The polymerization of methacrylonitrile using lithium metal in liquid ammonia takes place at a much faster rate than the corresponding amide (LiNH2) in liquid ammonia. This is because, metallic lithium initiates through the agency of solvated electrons formed in ammonia solution. Li + NH3 → Li+(NH3) + e–(NH3).

Related Questions

Consider the following statements regarding vapour absorption systems in the field of refrigeration: 1. In ammonia-water absorption system, ammonia is the refrigerant. 2. In water-lithium bromide system, water is the refrigerant. 3. Ammonia-water absorption reaction is endothermic. 4. The amount of ammonia absorbed by water is inversely proportional to the temperature of ammonia. Which of the above statements are correct?
In a swimming race, Purab swam faster than Sachin. Varun swam faster than Tanmay. Zaid swam faster than Tanmay but not as fast as Sachin. Sachin swam slower than Varun.Varun swam faster than only three. Who among the given friends came first in the race?
Usha runs faster than Kapil. Hanif runs faster than Usha. Varsha runs faster than Sameer but slower than Bijli. Which ofthe following will be definitely correct if Sameer runs faster than Hanif?
Lithium forms a BCC lattice with an edge length of 350 pm. The experimental density of lithium is 0.53 g cm-3. What is the percentage of missing lithium atoms? (Atomic mass of Lithium = 7 amu)
Which of the following statements are true/false?
1. A minimum rate of wages for the time spent by employees for the production of output is minimum time rate.
2. Minimum piece rate is the rate based on the quantity of the output employees have produced.
3. The guaranteed time rate is a minimum rate of remuneration to apply in the case of employees employed on piece work for the purpose of securing to such employees a minimum rate of wages on a time work basis.
4. A minimum rate of remuneration to apply in the case of employees employed on piece work for the purpose of securing to such employees a minimum rate of wages on a time work basis is overtime rate.
Consider the following statements: 1. The rate of population growth is increasing in the country 2. The death rate is declining faster in the country compared to birth rate 3. The birth rate is declining faster in the country compared to death rate 4. Rural-urban migration is taking place regularly in the country Which one of the following conclusions may be true in the light of the above facts?
Styrene is polymerized using amide catalyst in liquid ammonia, anionically. How will the rate of reaction change, if the monomer concentration is doubled (keeping rest other things constant)?
A, B, C, D and E participate in a running race. D moves faster than E by rate of 2 km/hr but slower than C at a rate of 1 km/hr. B moves faster than C by a rate of 1 km/hr and slower than A by 1 km/hr. What is the relative speed of the winner with respect to the person who completes at last (in km/hr)?
In order to prepare Lithium nitride, air is passed gently over a reactor. Suppose that Nitrogen diffuse to a length 5cm before getting reacted with Lithium. Nitrogen reacts with lithium quickly so that partial pressure of Nitrogen at that point is 0. Reactor is a cylinder of length 10cm and diameter 2cm. Assume air to be a mixture of Nitrogen and Oxygen only. The temperature is 298K and total pressure 1atm. Diffusivity of N2 in O2 is 2*10-5m2/s. Calculate the Molar flux (mol/m2.s) of N2 at a distance of 2.5cm from the top with respect to an observer moving with twice the mass average velocity a direction towards the liquid surface. (R=8.205*10-5m3atmK-1mol-1). Assume z=0 at the top of the reactor.
If the first two statements are true, the third statement is :
I. Mara runs faster than Gail.
II. Lily runs faster than Mara.
III. Gail runs faster than Lily.