S Block

Question 1

Sodium peroxide charcteristics

Answer 1

Pale yellow and diamagnetic and is powerful oxidizing agent

Question 2

NA2O2 + Na gives

Answer 2

Na2O

Question 3

At low temp, Na202 + H20 forms

Answer 3

Naoh + H20. only at high temp instead of H2o O2 is formed

Question 4

Na2O2 + H2SO4 at high temp. Is water formed?

Answer 4

As an exception, yes
2Na2O2 + 2HSO4 GIVES 2NA2SO4 + 2H2O + O2

Question 5

NA2O2 + CO LIBERTES O2 OR NOT?

Answer 5

NO, NA2O2 + CO2 FORMS O2 AND NA2CO3
NOT CARBON MONOXIDE WHICH JUST FORMS NA2CO3

Question 6

NA2CO3

Answer 6

WASHING SODA

Question 7

SODIUM OXIDE ON RN WITH LIQ AMMONIA FORMS?

Answer 7

sodium OXIDE

Question 8

GOSSAGE PROCESS ALSO CALLED? GIVE RN

Answer 8

LIME CAUSTIC SODA PROCESS
NA2O3 + CA(OH)2 GIVES 2NAOH + CACO3

Question 9

CASTER KELLNER CELL IS USED FOR WHAT?

Question 10

ELECTROLYSIS OF NACL
1 MIDDLE OF CELL IS
2 WHATACTS AS ANODE AND CATHODE?
3 AT ANODE WHAT FORMS
4 AT CATHODE WHAT FROMS
5A WHERE DOES SODIUM AMALGAM MOVE AND WHAT DOES IT DO
5B WHAT ACTS AS CATHODE IN INNER MIDDLE COMPARTMENT?
6 WHAT IS FORMED AT NODE AT SECOND PAR?
7 WHAT IS FORMED AT CATHODE IN SECOND PART?

Answer 10

1 MECURY
2 MERURY IN OUTER COMPNENT AS CATHODE AND IN MIDDLE COMPONENT ACTS AS ANODE
(3)CL2
(4)AMALGAM
(5) SODIUM ALAMGAM MOVES TO INNER MIDDE INNER COMPONENT AND ACTS AS ANODE
5B IRON
6 NA+ ION, HG+ AND 1 ELECTRON
7 OH- AND H2 GAS