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Amphoteric hydroxides react with both alkalies and acids. ‘Which of the following group 2 metal hydroxides is soluble in sodium hydroxide? (a) Be(OH)2 (b) Mg(OH)2 (c) Ca(OH)2 (d) Ba(OH)2

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Option a and b as basicity of oxides increases down in a group
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Be(OH)
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Be(OH)2
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a) Be(OH)2
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(a) Be(OH)2 Beryllium hydroxide is the correct answer. Among the options provided just Be(OH)2 is amphoteric in nature. Therefore it can respond to acid as well as base and hence they dissolve well in sodium hydroxide to form sodium tetrahydroxoberyllate. While others are base and they just don’t...
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  • (a) Be(OH)2

Beryllium hydroxide is the correct answer. Among the options provided just Be(OH)2 is amphoteric in nature. Therefore it can respond to acid as well as base and hence they dissolve well in sodium hydroxide to form sodium tetrahydroxoberyllate. While others are base and they just don’t dissolve in NaOH.

 

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