Amphoteric hydroxides react with both alkalies and acids. Which of the following Group 2 metal hydroxides is soluble in sodium hydroxide?
(i) Be(OH)2
(ii) Mg(OH)2
(iii) Ca(OH)2
(iv) Ba(OH)2
Amphoteric hydroxides react with both alkalies and acids. Which of the following Group 2 metal hydroxides is soluble in sodium hydroxide?
(i) Be(OH)2
(ii) Mg(OH)2
(iii) Ca(OH)2
(iv) Ba(OH)2
-
1 Answer
-
This is a multiple choice type question as classified in NCERT Exemplar
Correct option (i)
Be (OH)2 is amphoteric. It reacts with both acids and bases. It reacts with acid to form beryllium chloride and it reacts with base to form beryllate ion which is soluble in sodium hydroxide. The reaction is shown below.
Be (OH)2+2OH−→ [Be (OH)4]2−
Be (OH)2+2HCl→BeCl2+2H2O
Similar Questions for you
Li+ has the highest hydration enthalpy.
Hence it is most hydrated
Therefore, Correct order of hydrated radii is Cs+ < Rb+ < K+ < Na+ < Li+
Taking an Exam? Selecting a College?
Get authentic answers from experts, students and alumni that you won't find anywhere else
Sign Up on ShikshaOn Shiksha, get access to
- 65k Colleges
- 1.2k Exams
- 679k Reviews
- 1800k Answers