Recently Active Chemistry Questions

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prove that,the time required for 99.9% completion of a first order reaction is almost ten times that required for half the reaction ...

Show by a calculation (using the formula _G°__RT ln Keq) that a free-energy difference of 7.6 kJ mol_1 between the axial and equatorial forms of methylcyclohexane at 25°C (with the equatorial form being more stable) does co ...

What is the product? Please show mechanism too PhCOMe + ClCH2COOC2H5 --NaNH2→ ?? ...

For what compound A stands in the following equation? MeCOMe + CH≡CH -NaNH2→ A ...

3 CH2O + CH3CHO → Dil.Na2 Co3→ ? What is the product at a temperature of 400 C? ...

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Which of the following has the maximum acidic strength? ...

The equilibrium constant for the reaction; {{N}_{2}}left( g ight)+{{O}_{2}}(g) ightleftharpoons 2NO(g) at temperature T is 4 imes {{10}^{-4}}. The value of {{K}_{c}} for the reaction. at the same temperature is: ...

Calculate the oxidation number of Sulphur in Sulphuric acid ,Sulphurous acid,Hydrogen Sulphide ...

A ladder 15 m long just reaches the top of a vertical wall. If the ladder makes an angle of 60°with the wall, find the height of the wall. ...

The rate constant for a first order reaction is equal to the initial > rate of reaction when the initial concentration of the reactant is ...

The possible 10 alcohol formed by the molecular formula C6H14O...Please work out the structures. ...

When Mg is added to a carbon compound containing two different halide groups at symmetrical positions, which one forms the grignard reagent? for eg a compound containing Cl and Br ...

In a particular reaction the time required to complete half of the reaction was found to increase 16 times whereas the initial concentration of the reactant was reduced to one-fourth. What is the order of the reaction? ...

How would you distinguish between a sample of Sodium Chloride solution and sodium sulphate solution. ...

Which of these is expected to have the strongest Congugate base? ...

Which of these do not follow the octet rule ? ...

Compare the rate of electrophilic substitution *Image* *Image* *Image* *Image* ...

The conjugate acid of NH2- is ...

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The decomposition of N2O5 according to the equation: 2N2O5(g) → 4NO2(g) + O2(g) is a first order reaction. After 30 min. from the start of the decomposition in a closed vessel, the total pressure developed is found to be 28 ...

The following reaction proceeds by which mechanism? *Image* ...

Which of these gases have a tripple bond ? ...

Which of the following is most acidic? ...

Which of the following has the most acidic hydrogen? (a) 3-hexanone (b) 2,4-hexanedione (c) 2,5-hexanedione (d) 2.3-hexanedione ...

A salt derived from a strong base and a weak acid will give a salt that is ...

Why the yield of chlorobenzene is generally poor, When phenol is treated with PCl5 ??? ...

What is the mechanism for the reduction of RX by LiAlH4 ...

Can anyone suggest a mechanism of acidic hydrolysis of ethers? How to know which C-O bond is going to cleave in case of aromatic compounds on two sides of the oxygen atom? ...