Advertisements
Advertisements
प्रश्न
Why is `K_(a_2) "<<" K_(a_1)` for `H_2SO_4` in water?
Advertisements
उत्तर
`H_2SO_(4(aq)) + H_2O_(l) -> H_3O_(aq)^(+) + HSO_(4(aq))^(-); K_(a1) > 10`
`HSO_(4(aq))^(-) + H_2O_(l) -> H_3O_(aq)^(+) + SO_(4(aq))^(-); K_(a_2) = 1.2 xx10^(-2)`
It can be noticed that `K_(a_2) ">>" K_(a_1)`
This is because a neutral H2SO4 has a much higher tendency to lose a proton than the negatively charged `HSO_4^(-)`. Thus, the former is a much stronger acid than the latter.
संबंधित प्रश्न
What is molecular formula of oleum?
(a) H2SO3
(b) H2SO4
(c) H2S2O7
(d) H2S2O8
Write the conditions to maximize the yield of H2SO4 by contact process.
Complete the following equations: CaF2+H2SO4 →
What is the action of concentrated sulphuric acid on phosphorous pentachloride
What happens when dilute sulphuric acid is treated with CaF2
What is the action of concentrated sulphuric acid on copper
When concentrated sulphuric acid was added to an unknown salt present in a test tube a brown gas (A) was evolved. This gas intensified when copper turnings were added to this test tube. On cooling, the gas (A) changed into a colourless solid (B).
1) Identify (A) and (B).
2) Write the structures of (A) and (B).
3) Why does gas (A) change to solid on cooling?
Complete and balance the following equations:
S+H2SO4(conc.) →
Write a balanced chemical equation for the following reaction:
Sulphuric acid is treated with phosphorous.
Write the formula for pentaamminechlorocobalt (III) sulphate.
Write the reaction of conc. H2SO4 with sugar.
Identify the INCORRECT statement about H2SO4.
Gas 'X' is prepared by treating sodium sulfite with dilute sulfuric acid. When gas 'X' is oxidised by dioxygen in presence of vanadium (V) oxide, gas 'Y' is formed. Identify X and Y.
Which among the following catalysts is used in manufacture of sulphuric acid by contact process?
What is the ratio of volumes of gases involved in the preparation of sulphur trioxide from sulphur dioxide and dioxygen respectively under similar conditions of temperature and pressure?
The oxidation number of sulphur in Na2S4O6 is:-
