Which of the following fertilizers increases the acidity of the soil upon regular use?
- AUrea
- BSuper phosphate of lime
- CAmmonium sulphate
- DPotassium nitrate
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Which among the following species can act as an acid as well as a base according to the Brønsted-Lowry theory?
Conjugate acid of $NH_2^{-}$ and $NH_3$ are respectively
Given:
$(i) \ HCN_{(aq)} + H_2O_{(l)} \rightleftharpoons H_3O^{+}_{(aq)} + CN^{-}_{(aq)}$
$K_a = 6.2 \times 10^{-10}$
$(ii) \ CN^{-}_{(aq)} + H_2O_{(l)} \rightleftharpoons HCN_{(aq)} + OH^{-}_{(aq)}$
$K_b = 1.6 \times 10^{-5}$
These equilibria show the following order of the relative base strength:
$(i) \ HCN_{(aq)} + H_2O_{(l)} \rightleftharpoons H_3O^{+}_{(aq)} + CN^{-}_{(aq)}$
$K_a = 6.2 \times 10^{-10}$
$(ii) \ CN^{-}_{(aq)} + H_2O_{(l)} \rightleftharpoons HCN_{(aq)} + OH^{-}_{(aq)}$
$K_b = 1.6 \times 10^{-5}$
These equilibria show the following order of the relative base strength:
DifficultAIEEE 2012
View SolutionThe conjugate acid of $HS^{-}$ is
$H^{+}$ is a
Easy
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