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Anubhav Das
Subject: Chemistry
, asked on 2/9/16
why some elements so variation in their oxidation number? And in such a case how to find its oxidation no if its is used in a rxn...
Answer
3
Priyantan Nag
Subject: Chemistry
, asked on 25/8/16
what is the highest and lowest oxidation number of silver ?
Answer
1
Mahaksh Trivedi
Subject: Chemistry
, asked on 24/8/16
NO REACTION TAKES PLACE IN WHICH OF THE FOLLOWING EQUATIONS:
A I
-
+ Fe
2+
B F
2
+ 2NaCl
C Cl
2
+ 2NaF
D I
2
+ 2NaBr
Answer
1
Mahaksh Trivedi
Subject: Chemistry
, asked on 23/8/16
One
gram
of a mixture of
Na
2
CO
3
and
NaHCO
3
consumes
y equivalents of HCl for complete neutalisation.
One gram of the mixture is strongly heated, then cooled and the residue is treated with HCl. How many equivalents of HCl would be required for complete neutralisation?
A. 2y
B. y
C. 3y/4
D. 3y/2
Answer
1
Mahaksh Trivedi
Subject: Chemistry
, asked on 17/8/16
1.245 g of CuSO
4
.
xH
2
O was dissolved in water and H
2
S gas was passed through it till CuS was completelyprecipitated. The H
2
SO
4
produced in the filtrate required 100 ml of 0.1 M NaOH solution. Calculate x approx.
5
6
7
8
Answer
1
Mahaksh Trivedi
Subject: Chemistry
, asked on 21/7/16
balance the reaction Mg + HNO
3
gives Mg(NO
3
)
2
+ NH
4
NO
3
Answer
1
Rishbha
Subject: Chemistry
, asked on 20/7/16
PLZ GIVE THE ANSWER
Answer
1
Utkarsh Kaushik
Subject: Chemistry
, asked on 15/7/16
. For decolourization of one mol of KMnO4, the required litre of 30 volume H2O2 in acidified medium (1) 0.94 (2) 9.4 (3) 0.094 (4) 3.01
Answer
1
Mahaksh Trivedi
Subject: Chemistry
, asked on 10/7/16
PLEASE EXPLAIN ME THE CONCEPT OF
REDOX TITRATION, DOUBLE TITRATION AND BACK TITRATION
IN DETAIL
.
Answer
1
Utkarsh Kaushik
Subject: Chemistry
, asked on 9/7/16
An element A in a compound ABD has an oxidation number A
–n
. It is oxidized by Cr
2
O
7
2–
in acidic medium. In an experiment 1.68 × 10
–3
mol of K
2
Cr
2
O
7
was required for 3.26 × 10
–3
mol of the compound ABD. Calculate new oxidation state of A. (1) 3 – n (2) n + 3 (3) –3 (4) +n
Answer
1
Mahaksh Trivedi
Subject: Chemistry
, asked on 7/7/16
PLEASE EXPLAIN ME IN DETAIL THE CONCEPT OF
CALCULATION
OF
"
N
-
FACTOR
" AND
EQUIVALENT
WEIGHT
FOR INTRAMOLECULAR , INTERMOLECULAR AND DISPROPORTIONATION REACTION IN REDOX REACTION. PLEASE EXPLAIN IT WITH ENOUGH EXAMPLES
Answer
1
Avinash
Subject: Chemistry
, asked on 29/6/16
Balance the Chemical Equation :
Cr
2
O
7
+ NH
3
gives Cr
++
+ NO
3
-
Answer
1
Arpit Mehta
Subject: Chemistry
, asked on 26/5/16
2KclO
3
--->2KCl+ 3o
2
what will be the oxidation no. of cl in 2kClo
3
?
Answer
1
Khansa
Subject: Chemistry
, asked on 28/4/16
A compound contains X,Y AND Z atoms .the oxidation states of X , Y AND Z are +2 ,+2 and -2 respectively. the possible formula of the compound is a) XYZ
2
b) X
3
(Y
4
Z)
2
Answer
3
Khansa
Subject: Chemistry
, asked on 28/4/16
if the H
+
concentration is decreased from 1M to 10
-4
M at 25 degree celsius for the couple MnO
4
-
/Mn
+2
, then the oxidising power of the MnO
4
-
/Mn+2 couple decreases by a) -0.18V b)0.38V
Answer
1
1
2
3
4
5
Next
What are you looking for?
A I-+ Fe2+
B F2 + 2NaCl
C Cl2+ 2NaF
D I2+ 2NaBr
A. 2y
B. y
C. 3y/4
D. 3y/2
5
6
7
8
Cr2O7 + NH3 gives Cr++ + NO3-
what will be the oxidation no. of cl in 2kClo3 ?