मराठी
कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान इयत्ता ११

Identify the compounds A, X and Z in the following reactions: A+2HCl+5HX2O⟶2NaCl+X - Chemistry

Advertisements
Advertisements

प्रश्न

Identify the compounds A, X and Z in the following reactions:

\[\ce{A + 2HCl + 5H2O -> 2NaCl + X}\]

टीपा लिहा
Advertisements

उत्तर

\[\ce{\underset{\underset{(Borax)}{(A)}}{Na2B4O7} + 2HCl + 5H2O -> 2NaCl + \underset{\underset{(Boric acid)}{(X)}}{4H3BO3}}\]

shaalaa.com
Group 13 Elements - The Boron Family
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 11: The p-block Elements - Multiple Choice Questions (Type - I) [पृष्ठ १३९]

APPEARS IN

एनसीईआरटी एक्झांप्लर Chemistry [English] Class 11
पाठ 11 The p-block Elements
Multiple Choice Questions (Type - I) | Q 34.(i) | पृष्ठ १३९

संबंधित प्रश्‍न

How can you explain higher stability of BClas compared to TlCl3?


If B–Cl bond has a dipole moment, explain why BCl3 molecule has zero dipole moment.


Aluminium trifluoride is insoluble in anhydrous HF but dissolves on the addition of NaF. Aluminium trifluoride precipitates out of the resulting solution when gaseous BF3 is bubbled through. Give reasons.


What happens when BF3 is reacted with ammonia?


How would you explain the lower atomic radius of Ga as compared to Al?


In some of the reactions thallium resembles aluminium, whereas in others it resembles with group I metals. Support this statement by giving some evidences.


What do you understand by inert pair effect?


Write a balanced equation for Al + NaOH → ?


Ionisation enthalpy (∆iH1kJ mol–1) for the elements of Group 13 follows the order.


The most commonly used reducing agent is ______.


When BCl3 is treated with water, it hydrolyses and forms [B[OH]4] only whereas AlCl3 in acidified aqueous solution forms [Al(H2O)6]3+ ion. Explain what is the hybridisation of boron and aluminium in these species?


Aluminium dissolves in mineral acids and aqueous alkalies and thus shows amphoteric character. A piece of aluminium foil is treated with dilute hydrochloric acid or dilute sodium hydroxide solution in a test tube and on bringing a burning matchstick near the mouth of the test tube, a pop sound indicates the evolution of hydrogen gas. The same activity when performed with concentrated nitric acid, reaction doesn’t proceed. Explain the reason.


Explain the following:

Electron gain enthalpy of chlorine is more negative as compared to fluorine.


Match the species given in Column I with the properties mentioned in Column II.

Column I Column II
(i) \[\ce{BF^{-}4}\] (a) Oxidation state of central atom is +4
(ii) AICI3 (b) Strong oxidising agent
(iii) SnO (c) Lewis acid
(iv) PbO2 (d) Can be further oxidised
  (e) Tetrahedral shape

Describe the general trends in the following properties of the elements in Groups 13 and 14.

Atomic size


Describe the general trends in the following properties of the elements in Groups 13 and 14.

Metallic character


Three pairs of compounds are given below. Identify that compound in each of the pairs which has group 13 element in more stable oxidation state. Give reason for your choice. State the nature of bonding also.

InCl3, InCl


Boron compounds behave as Lewis acids because of their ______.


Which one of the following is the correct statement?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×