Which of the following fertilizers increases the acidity of the soil upon regular use?

  • A
    Potassium nitrate
  • B
    Urea
  • C
    Superphosphate of lime
  • D
    Ammonium sulphate

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Which of the following species can act as both a $Br\text{ø}nsted$ acid and a $Br\text{ø}nsted$ base?

Derive $K_w = K_a \times K_b$ and $pK_w = pK_a + pK_b$ for a weak base $B$ and its conjugate acid $BH^{+}$.

What is the correct order of increasing basicity for the given conjugate bases $(R = CH_3)$?

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Which of the following species is an acid and also a conjugate base of another acid?

An amphoteric anion is capable of both accepting and donating a proton in a suitable medium. Which of the following ions exhibits this property?

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