क्रियाविधि बनाना सीखो SN1, SN2 | L-8 | Ch-6 | हैलोऐल्केन तथा हैलोऐरीन | Class-12 chemistry | ?Live

Trick To Identify SN1, SN2, E1, E2 Reactions |Reaction Mechanism |JEE MAINS 2020/NEET 2020 Chemistry

The LCM of 3.6, 1.2 and 4.8 is

The LCM of 3.6, 1.2 and 4.8 is

(a) Write the cell reaction and calculate the e.m.f. of the following cell at 298 K : Sn(s) |Sn^(2+) (0.004M)||H^(+) (0.020M) |H_(2)(g) (1 bar )| Pt(s) (Given E_(Sn^(2+)//Sn)^(@) = -0.14V ). (b) Give reasons : (i) On the basis of E^(@) values , O_(2) gas should be liberated at anode but Cl_(2) gas which is liberated in the electrolysis of aqueous NaCl. (ii) Conductivity of CH_(3)COOH decreases on dilution .

Sn1 तथा Sn2 त्रिविमरासायनिक पहलु |प्रतिबिम्ब रूपी समावयवी |रेसेमीक मिश्रण

If I_1 = (12.0 +- 0.1) cm and I_2 = (8.5 +- 0.5)cm find (l_1 +l_2) and (l_1 +l_2) with proper error limits.

If in a frequency distribution table with 12 classes, the width of each class is 2.5 and the lowest class boundary is 6.1, then what is the upper class boundary of the highest class ?

Read the given passage and answer the questions number 1 to 5 that follow: The substitution reaction of alkyl halide mainly occurs by S_N 1 and S_N 2 mechanism. Whatever mechanism alkyl halides follow for the substitution reaction to occur, the polarity of the carbon halogen bond is responsible for these substitution reactions. The rate of S_N 1 reactions are governed by the stability of carbocation whereas for S_N 2 reactions steric factor is the deciding factor. If the starting material is a chiral compound, we may end up with an inverted product or racemic mixture depending upon the type of mechanism followed by alkyl halide. Cleavage of ethers with HI also governed by steric factor and stability of carbocation, which indicates that in organic chemistry, these two major factors help us in deciding the kind of product formed 1. Predict the stereochemistry of the product formed if an optically active alkyl halide undergoes substitution reaction by S_N 1 mechanism. 2. Name the instrument used for measuring the angle by which the plane polarised light is rotated. 3. Predict the major product formed when 2-Bromopentane reacts with alcoholic KOH. 4. Give one use of CHI_3 5. Write the structures of the products formed when anisole is treated with HI.