Recently Active Chemistry Questions

Why are peroxides good free radical initiator? ...

Which is an acidic hydrocarbon (A) CH3CH2CH2CH3 (B) CH3C≡CCH3 (C) CH3C≡CH (D) CH2 = CH – CH = CH2 ...

A certain reaction A + B → Product is first-order w.r.t. each reactant with k = 5.0 x 10-3 M-1s-1. Calculate the concentration of A remaining after 100 s if the initial concentration of A was 0.1 M and that of B was 6.0 M. ...

The standard reduction potential of a calomel half cell is 0.28 V at 25°The standard reduction potential of a calomel half cell is 0.28 V at 25°C. Calculate half cell potential when 0.1N KCL soln is used ...

Which Books Should i buy for organic chemistry.???? ...

Although Carbon is a non-metal, but one of its allotrope, Graphite conducts electricity. Why? ...

*Image* Show the mechanism ...

The ionization potentials of atoms A and B are 400 and 300 kcal/mol respectively. The electron affinities of these atoms are 80 and 85 kcal/mol respectively. Which of the atoms is more electronegative? ...

A sample of chlorine is found to have 75% of 17Cl35 and 25% of 17Cl37. a. Find the average atomic mass of chlorine b. Give the number of neutrons in both the isotopes. ...

If the radius of the first Bohr orbit is 'a', then what is the De-broglie wavelength of the electron in the 3rd orbit? ...

Which one is more acidic, p-fluorobenzoic acid or p-bromobenzoic acid and why? ...

Please help:- *Image* Thanx... ...

4.4 g sample of a compound of oxygen and carbon was found to contain 1.2 g carbon and 3.2 g of oxygen. Calculate the percentage composition of the compound. ...

Calculate the equilibrium concentration ratio of C to A if 2.0 ml of each of A and B were allowed to come to equilibrium at 300 K. A + B *Image* C + D dG = 460 cal ...

Arrange the following in increasing order of dehydration *Image* ...

what is an electron cloud ...

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PERIODIC TABLE WHAT IS ELECTRON AFFINITY? HOW DOES IT CHANGE DOWN THE GROUP AND ALONG A PERIOD IN PERIODIC TABLE? AND WHY? ...

Which of the molecules will have polar bonds but zero dipole moment? A] O2 B] CHCl3 C] CF4 D] None of these ...

Arrange these according to the strengths of the σ-bonds they form along with proper reasons: s-s , s-p, p-p overlap of At. orbitals. ...

Chlorine is quite electronegative. So, why is hydrogen bond not present in HCl? Thanx... ...

What is transcription and transformation in proteins? ...

*Image* You can write the mechanism on a paper, scan it (or take a picture of it) and upload it. ...

What is the difference between a combustible substance and a supporter of combustion? Thanx in advance... ...

Saturated CaC2O4(aq) is prepared and 250 ml of solution is withdrawn and titrated with 6.3 ml of 0.00102 M KMnO4(aq). What is the value of Ksp for CaC2O4? ...

10 ml of a mixture of Na2CO3 and NaHCO3 is titarted with 0.1 M H2SO4 solution. When phenolphthalein is used, it is observed that if 2.5 ml acid solution is added then the solution becomes colourless. After this when one drop ...

*Image* Give the product of the organic reaction given above by showing its favourable mechanism. ...

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An aqueous solution of salt (A) gives a white precipitate (B) with NaCl solution. The filtrate gives a black precipitate (C) when H2S is passed into it. Compound (B) dissolves in hot water and the solution gives a yellow prec ...

2.5g of BaO and CaO when heated with excess H2 SO4 , produced 4.713g of mixed sulphates. Find the percentage of BaO present in mixture ...