Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • School
  • When  is fused with  in the presence of air it gives a yellow so

When FeCr_2O_4 is fused with Na_2CO_3 in the presence of air it gives a yellow solution of compound(A). Compound (A) on acidification gives comound (B). Compound (B) on reaction with KCl forms an orange coloured compound (C). An acidified solution of comound (C) oxidises Na_2SO_3 to (D). Identify (A), (B), (C) and (D).

 

 

 

 

 
 
 
 
 

Answers (1)

best_answer

4FeCr_2O_4+8Na_2CO_3+7O_2\rightarrow 8Na_2CrO_4+2Fe_2O_3+3CO_2

                                                                    Sodium Chronate

                                                                           (Yellow)

                                                                              (A) 

2Na_2Cr_2O_4+H_2SO_4(conc.)\rightarrow Na_2Cr_2O_7+Na_2SO_4+H_2O

                                                                 Sodium dichronate

                                                                         (B)

Na_2Cr_2O_7+2KCl\rightarrow K_2Cr_2O_7+2NaCl

                                                        (C)

K_2Cr_2O_7+4H_2SO_4+3Na_2SO_3\rightarrow K_2SO_4+Cr_2(SO_4)_3+4H_2O + 3Na_2SO_4

(C)                                                                                                           (D)

Posted by

Sumit Saini

View full answer

Crack CUET with india's "Best Teachers"

  • HD Video Lectures
  • Unlimited Mock Tests
  • Faculty Support
cuet_ads

Similar Questions

Trending Articles/News

anam-khan

CBSE Board exams twice a year from 2025, no plan for semesters: MoE
anam-khan

CBSE Class 12 board exams 2025 to have 50% competency-based questions; no change in 10th
anam-khan

CBSE Class 12 board exams 2024 over; expected result date, trends of last 10 years

Latest Question