Short Answer Type
Long Answer TypeJustify the statement: All Bronsted bases are Lewis bases, but all Bronsted acids are not Lewis acids.
Short Answer TypeOut of Lowry Bronsted concept and Lewis concept, which is regarded as better and why?
Long Answer TypeShort Answer TypeThe ionic product of water is 0·11 × 10–14 at 273 K; 1·0 × 10–14 at 298K and 51 × 10–14 at 373K. Deduce from this data whether the ionisation of water into hydrogen and hydroxide ion is exothermic or endothermic.
Long Answer TypeComment on the statement: An acidic solution contains OH– ions and even a basic solution contains H3O+ ions.
Or
How the values of Kw, [H3O+] and [OH–] are affected if acid or base is added to pure water at 298K?
Short Answer TypeWhat is the effect of temperature on pH?
We know that ionic product of water (Kw.) increases with the rise of temperature. Therefore, the concentration of H3O+ ions increases with temperature.
Therefore, pH value is inversely proportional to 
ion concentration
Hence pH value decreases with the rise in temperature.
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