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Equilibrium

Short Answer Type

191.

What are electrolytes and non-electrolytes?

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Long Answer Type

192. Discuss different types of electrolytes.

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193. What is a degree of ionisation ?

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194.

Discuss the ionisation of weak electrolytes (Ostwald’s dilution law).

311 Views

Short Answer Type

195.

Write the correct balanced net ionic equation for the reaction whose equilibrium constant at 298K is:
(i) K_a(C₆H₅COOH) = 6·3 × 10^–5(ii) K_a(H₂C₂O₄) = 5·4 × 10^–2(iii) K_a ( HSO₃^–) = 2·8 × 10^–7(iv) K_b(OCl^–) = 9·1 × 10^–7

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196. Write correctly the balanced net ionic equation for the reaction whose equilibrium constant at 298K is:

(i) K_b(CH₃NH₂) = 4·4 × 10^–5(ii) K_aS) = 1·0 × 10^–7(iii) K_a (HCN) = 4·0 × 10^–10(iv) K_b(NH₃) = 1·8 × 10^–5

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197. Calculate the degree of ionisation and hydronium ion concentration of a 0·02 M acetic acid at 298K. The dissociation constant of acid is 1·8 × 10^–5at 298K.

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Long Answer Type

198. At 298K, 0·01M solution of acetic acid is 1·34% ionised. What is the ionisation constant K_a for acetic acid?

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199. Discuss in brief Arrhenius concept of acids and bases.

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Short Answer Type

200.
What is the fate of proton in aqueous medium?

Proton is simply a hydrogen ion. A naked proton cannot exist as such in the aqueous solution because of its vanishingly small size. Due to its small size and very high charge density, it has strong tendency to interact with water molecules and gets hydrated.