Write the balanced chemical equations for the following.
(i)Hypophosphorous acid is heated.
(ii) Sodium chlorate reacts with sulphur dioxide in dilute sulphuric acid medium.
Correct Answer - C
We know that ,
`CH_(3)COOH + NaHCO_(3) to CH_(3) COONa + CO_(2) + H_(2) O`.
Thus in this reaction acetic acid `(CH_(3)COOH)` reacts with `NaHCO_(3)` to give...
Dilute `H_(2)SO_(4)` behaves as a proton acid and zinc metal displaces hydrogen from the acid.
`Zn+H_(2)SO_(4)("dil")to ZnSO_(4)+H_(2)`
Concentrated `H_(2)O_(4)` behaves as a strong oxidising agent and itself is reduced to...
(a) `({:(K_(2)Cr_(2)O_(7)+2H_(2)SO_(4)to KHSO_(4)+2CrO_(3)+H_(2)O),(NaCl+H_(2)SO_(4)to NaHSO_(4)+HCLxx4),(2CrO_(3)+4HCl to 2CrO_(2)Cl_(2)+2H_(2)O):})/(K_(2)Cr_(2)O_(7)+4NaCl+6H_(2)SO_(4) to 2CrO_(2)Cl_(2)+4NaHSO_(4)+2KHSO_(4)+3H_(2)O)`
Correct Answer - B
`S_1:2H_2O+SO_2 hArr SO_4^(2-)+4H^(+)+2e^(-)`(increase in `[H^+]` will shift the equilibrium in backward direction )
`SO_2 +4OH^(-)hArr SO_4^(2-)+2H_2O+2e^(-)`(increase in `[OH^-]` will shift the equilibrium in forward direction )
`S_2:2H_2S+SO_2...