True. Temperature is a measure of the average kinetic energy in the molecules.
Answer:
1.They break the bonds between the ions.
2.They remove electrons from the ions.
Explanation:
covalent bonds do not dissolve in water but some covalent compoound s do
Answer:
option d= -440 kj
Explanation:
chemical equation:
CH4 + 4Cl2 → CCl4 + 4HCl
Given data:
Bond broken energies:
C-H = 413 Kj/mol
Cl-Cl =243 Kj/mol
Bond formation energies:
C-Cl = 339 Kj/mol
H-Cl = 427 Kj/mol
Formula:
δh° = ∑n (bonds broken) - ∑m (bonds formation)
Solution:
Total bonds broken energy:
C-H = 413 Kj/mol 4×413 Kj/mol = 1652 Kj/mol
Cl-Cl = 243 Kj/mol 4×243 Kj/mol = 272Kj/mol
total = 2624 Kj/mol
Total bond formation energy:
C-Cl = 339 Kj/mol 4×339 Kj/mol = 1356 Kj/mol
H-Cl = 427 Kj/mol 4×427 Kj/mol = 1708 Kj/mol
total = 3064 Kj/mol
Now we will put the values in formula to calculate the δh° for reaction.
δh° = ∑n (bonds broken) - ∑m (bonds formation)
δh° = (2624) - (3064)
δh° = -440 kj
Answer:
The new class of compound formed is an alcohol.
Explanation:
The treatment of an alkene with Hg(OAc)₂ in alcohol followed by reaction with NaBH₄ gives an alcohol. This reaction is known as oxymercuration-demercuration reaction. It is a two-step pathway which proceeds in the Markovnikov manner. In this reaction, the alkene react with the Mercury salt (Hg(OAc)₂) and a nucleophile (alcohol) to form an organomercury intermediate. The intermediate's carbon-mercury bond is then converted to carbon-hydrogen bond by the reaction with NaBH₄. An alcohol is then produced.
B i think correct if wrong