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Stoichiometry

Q1:

In a neutral solution

A H+ ions are absent.

B OH- ions are absent.

C both H+ and OH- ions are present in very small but equal concentration.

D none of these.

ANS:C - both H+ and OH- ions are present in very small but equal concentration.

In a neutral solution, the concentration of hydrogen ions (𝐻+H+) and hydroxide ions (𝑂𝐻−OH−) are equal. However, they are present in very small concentrations, and their product, 𝐻+×𝑂𝐻−H+×OH−, is equal to the dissociation constant of water (𝐾𝑀Kw​) which is 1×10−141×10−14 at 25°C. Therefore, the correct statement is: (c) both 𝐻+H+ and 𝑂𝐻−OH− ions are present in very small but equal concentration.



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