CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Byju's Answer
Standard XII
Chemistry
Introduction to d and f Block Elements
A sulphate of...
Question

A sulphate of a metal (A) on heating evolves two gases (B) and (C) and an oxide (D). Gas (B) turns K2Cr2O7 paper green while gas (C) forms a trimer in which there is no S-S bond. Compound (D) with conc. HCl forms a Lewis acid (E) which exists in a dimer. Compounds (A), (B), (C), (D) and (E) are respectively:

A
FeSO4, SO2, SO3, Fe2O3, FeCl3
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
Al2(SO4)3, SO2, SO3, Al2O3, FeCl3
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
FeS, SO2, SO3, FeSO4, FeCl3
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
FeS, SO2, SO3, Fe2(PO4)3, FeCl2
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is A FeSO4, SO2, SO3, Fe2O3, FeCl3
Only FeSO4 gives two gases and a oxide
2FeSO4⟶Fe2O3+SO2+SO3
SO2 turns K2Cr2O7 paper green SO3 forms trimer
D is Fe2O3
Fe2O3+6HCl⟶2FeCl3+3H2O
FeCl3 exists in a dimer as Fe2Cl6

flag
Suggest Corrections
thumbs-up
0
similar_icon
Similar questions
Q. A sulphate of a metal (M) on healing evolves two gases (B) and (C) and an oxide (D). Gas (B) turns acidified dichromate paper green while gas (C) forms a trimer. Compound (D) forms a Lewis acid (E) with HCl (g).
If, the number of S -S bonds in trimer of gas (C) be 'n' and the number of equivalent M-Cl bonds in one molecule of anhydrous (E) be 'm', Then, (m + n) is:
Q. Sulphur reacts with conc.H2SO4 to give a gas A and, it reacts with conc. HNO3 to give a gas B. A and B respectivley are:
Q. A hydrated metallic salt (A) , light green in colour gives a white anhydrous residue (B) after being heated gradually. (B) is soluble in water and its aqueous solution reacts with NO to give a dark brown compound (C). (B) on strong heating gives a brown residue (D) and a mixture of two gases (E) and (F). The gaseous mixture , when passed through acidified permanganate, discharged the pink colour and when passed through acidified BaCl2 solution, gives a white precipitate. Compounds (A), (B), (C) , (D) , (E) and (F) are identified as:
(A) : FeSO4.7H2O (B) : FeSO4,(C) : FeSO4.NO or [Fe(H2O)6NO]SO4], (D) : Fe2O3,(E) : SO2 and (F) : SO3
If true enter 1, else enter 0.
Q. A 5g mixture of SO2 and O2 gases is reacted to form SO3 gas. What should be the mass ratio of SO2 and O2 gases in mixture to obtain maximum amount of SO3 gas.
Q. (i) A black mineral (A) on heating in presence of air gives a gas (B).
(ii) The mineral (A) on reaction with dilute H2SO4 gives a gas (C) and solution of a compound (D).
(iii) On passing gas (C) into an aqueous solution (B), a white turbidity is obtained.
(iv) The aqueous solution of compound (D) on reaction with potassium ferricyanide gives a blue compound (E).
Compounds (A) to (E) are identified as:
(A) : FeS , (B) : SO2, (C) : H2S, (D) : FeSO4 and (E) : KFeII[FeIII(CN)6]
If true enter 1, else enter 0.
View More
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Introduction
CHEMISTRY
Watch in App
explore_more_icon
Explore more
Introduction to d and f Block Elements
Standard XII Chemistry
Join BYJU'S Learning Program
book_image
Solve
book_image
Textbooks
book_image
Question Papers
book_image
Install app
CrossIcon