11. Which best demonstrates an example of the common ion effect? A)A lighted splint goes out in air but bursts into flame when plunged l Into pure oxygen.

B)The compound Cucl is 500 times less soluble in sea water than it is in pure water.

C) Ammonla is produced commercially when an increase in pressure shifts the equilibrium toward the product.

D The decomposition of carbonic acid in water occurs spontaneously whereas the combination of carbon dloxide and water does not.

explanation:

venn diagram is pictorial representation with of circles showing the relation between two finite sets or things. the intersection part of two circles conveys the relation present in between those sets or things.

here in the venn diagram of sand and salt two circles represent sand and salt. but the area falling under the intersection of these circle represents the mixture of sand and salt.

so, in a venn diagram the mixture will be placed in a middle that is in between the intersection of two circles.

answer: -

reaction:

na + cl ⇌ nacl

balanced chemical equation:

na + 2cl ⇌ nacl2

sodium + clorine goes to form sodium chloride (table salt).

the product is nacl2.

and the reactants are na and cl.

(note: if you don’t know what ⇌ means, read below: -

⇌(double head arrow) means reversible reaction).

the correct answer to this question is 2