Which of the following equilibria is unaffected by a pressure change?

a

2NaCI(s) ↔ 2Na (I) + CI2(g)

b

H 2(g) + I2(g) ↔ 2HI(g)

c

2O3(g) ↔ 3O2(g)

d

2NO2(g) ↔ N2O4(g)

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Explanation

Correct Option
b

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Discussions (26)

vickyf
9 years ago

stop saying wat u dont noooo....nd dont mislead d public.....myschool God bless u....it is absoletely correct.....bcuz it is not compulsory dat every tin must be i gaseous state....once at least one of d reactant and one of d product is in gaseous state pressure can affect d reaction.....but wen d total number of mole in d reactant nd in product are dsame pressure cannot affect d equation.. .so B is correct....God bless u myschool

haramyde
7 years ago

which of the following equilibra is unaffected by a pressure change?
B.H2(g) + I2(g)_ 2HI(g)

Okessmyname
12 years ago

this people are marking rubbish the real answer is A cause pressure only affect gas boyle lawn

agha.j
3 years ago

The site has offered a wrong answer to this question. By the principle pressure affects only gaseous products AND reactants , all otipns B-D all have both gaseous produts and reactants. Thus, A would only suffice for NOT being affected as NaCl is not a gas so is Na, added to this, NaCl cannot decompose to give Na(l). it only gives NaCl -> Na+ (aq) + Cl-(aq). This is due to its electrolytic dissociation. otherwise, NaCl is thermally stable and would not release Cl2

Prince Nemerem
9 years ago

B is actually correct, but this question is so puzzling

Nickyrozay
12 years ago

exactly @Prof ECG. I agree with you

Aniagolu2007
3 years ago

B is correct ,Cl2 gas

De sage
10 months ago

it's A guys. pressure don't have effect on liquid and solid only gases

bigjubz
2 months ago

this is so obviously wrong

Nnaaaaa
7 years ago

Please correct this pressure is the collision of gas molecules with the container there for pressure change is observed only in gaseous chemical reaction

Fathia7449
1 year ago

the answer is A pressure only have effect on gases

Confiken2
6 years ago

The answer is B even though the question is not straight forword
NB:there is no change in the mole of the reactant and product of option B

Prof E.C.G
12 years ago

This answer is wrong..The correct answer is "A" because pressure can ONLY have an effect on equilibrum when the products and reactants are all in gaseous(g) phase..If u look @the options B-D,they are all in gaeous phase except that of "A".

kennyben02
7 years ago

thecorrect answer is A

Fathia7449
1 year ago

The answer is A

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