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a) Write a balanced equation of the formation of dimethyl carbonate by the reaction of methanol with carbon dioxide. How can dimethyl carbonate form if phosgene is the reactant?
b) Formyl-morpholine can be synthesized from carbon dioxide and morpholine using an appropriate catalyst. Which additional reactant is required? Write down the reaction scheme. How would the scheme change if carbon monoxide was used instead?
molecular weight of orthophosphoric acid is M.Its equivalent weight
An electron has kinetic energy 2.8 x 10 -23 J . de-Broglie wavelength will be nearly: (me: 9.1 x 10 -31 kg) (1) 9.28x 10 -4 m (2) 9.28 x10 -7 m
Line Spectru- A emission spectrum that contains very sharp peaks (Prism Like Structure) , corresponding to transitions between states in free atoms.For example, the line spectrum o
How much time a hydrogen electron will take when it goes from first orbit to second orbit?
1 gm of a metallic oxide on reduction gives 0.68 gm of the metal. ans) Mass of metal/mass of oxygen=eq. mass of metal/eq. mass of oxygen. applying this we get .68/.32=x/8 x=1
The maximum probability of finding an electron in the d xy orbital is: (1) Along the x-axis (2) Along the y-axis (3) At an angle of 45 0 degree from the x and y
The correct electronic configuration of Ti(Z= 22) atom is: (1) 1s 2 , 2s 2 , 2p 6 , 3p 6 , 4s 2 , 3d 2 , (2) 1s 2, 2s 2 , 2p 6 , 3p 6 , , 3d 4 , (3) 1s 2 , 2s
200 g of water at 30 degrees C is mixed with 20 g of silver at 350 degrees C, what''s the final temp?
Electrovalent compounds are: (1) Good conductor of electricity (2) Polar in nature (3) Low M.P. and low B.P. (4) Easily available Ans: Polar in nature
In lab, buffers solution based onto a 0.1 M solution of sodium phosphate at pH7.0. Within this system, there are three of pK A s like: 12.7, 7.21 and 2.12. Determine the conce
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