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Select the incorrect order :
(a) \(AlF_3 > MgO > MgF_2\) : Lattice energy
(b) \(Li > Na > Al > Mg\) : Electron affinity
(c) \(SF_6 > PF_5 > SiF_4\) : Lewis acidic character
(d) \(SiCl_4 > SiBr_4 > Sil_4\) : Decreasing order of electronegativity of Si
Updated Thu, 12 Sep 2019 08:52 am


Excess of carbon dioxide is passed through 50 mL of 0.5M calcium hydroxide solution. After the completion of the reaction, the solution was evaporated to dryness. The solid calcium carbonate was completely neutralised with 0.1 N hydrochloric acid. The volume of hydrochloric acid required is (At. mass of calcium = 40)
(a) 200 cm\(^3\)
(b) 500 cm\(^3\)
(c) 400 cm\(^3\)
(d) 300 cm\(^3\)
Updated Thu, 12 Sep 2019 08:29 am