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Mallika Subramanian
Subject: Chemistry
, asked on 13/3/18
Are the answers posted on meritnation's board solutions (2018) based on board marking scheme or can the value points vary?
Answer
2
Kurian J
Subject: Chemistry
, asked on 12/3/18
Structure of IF5 and IF7 ??
Answer
1
Prerna Varshney
Subject: Chemistry
, asked on 12/3/18
Solve this:
Q. Account for the following :
(i) XeF
2
is linear molecule without a bend.
The electron gain enthalpy with negative sign for fluorine is less than that of chlorine, still fluorine is a stronger oxidizing agent than chlorine.
Answer
4
Sandra Saju
Subject: Chemistry
, asked on 12/3/18
SnCl4 is more covalent than SnCl2. Why ?
Answer
3
Sandra Saju
Subject: Chemistry
, asked on 12/3/18
White phosphorous is more reactive than red phosphoorus.( No links please)
Answer
3
Sandra Saju
Subject: Chemistry
, asked on 12/3/18
Unlike xenon, no distinct chemical compound of helium is known . Why ? ( No links please )
Answer
2
Sandra Saju
Subject: Chemistry
, asked on 12/3/18
What happens when F2 reacts with water ?
Answer
3
Sandra Saju
Subject: Chemistry
, asked on 12/3/18
Although nitrogen and chlorine have nearly same electronegativity yet nitrogen forms hydrogen bonding while chlorine does not. Why ?
Answer
3
Nithyashrri Saravanan
Subject: Chemistry
, asked on 12/3/18
Dear experts arrange the group 16 elements in increasing order of electron gain enthalpy with -ve sign. The values of egh are given in pg 182. Here are we supposed to arrange in terms of magnitude or increasing order with -ve sign?
Answer
2
Nithyashrri Saravanan
Subject: Chemistry
, asked on 12/3/18
WHICH ONE OF PCl4+ and PCl4-is likely to exist. Why ?
Answer
2
Nithyashrri Saravanan
Subject: Chemistry
, asked on 12/3/18
Dear experts the NO bond in NO2- are shorter than NO bond in NO3-. Justify.
Answer
1
Sandra Saju
Subject: Chemistry
, asked on 11/3/18
The C- Cl bond length in chlorobenzene is shorter than that in CH3-Cl. Why ?( Please provide small answer for 1 mark ) ( No links please )
Answer
1
Varnika Dhiman
Subject: Chemistry
, asked on 11/3/18
The last element of group 16 polonium has low melting point and boiling point in its period. Explain. [It's a repost. Kindly answer.]
Answer
2
Sandra Saju
Subject: Chemistry
, asked on 10/3/18
23. Magnesium is more electropositive than aluminium, therefore, it can reduce alumina thermodynamically but in India aluminium is being extracted by electrolytic reduction and not chemical reduction.
1. Under what conditions magnesium can reduce alumina?
2. Although thermodynamically feasible, in practice, magnesium metal is not used to Reduce alumina. Explain.
3. What are the values involved in using electrolytic reduction instead of chemical reduction for the extraction of aluminium?
Answer
1
Prerna Varshney
Subject: Chemistry
, asked on 9/3/18
H3PO2 is strong reducing agent H3PO4
Give reason
Answer
2
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What are you looking for?
Q. Account for the following :
(i) XeF2 is linear molecule without a bend.
The electron gain enthalpy with negative sign for fluorine is less than that of chlorine, still fluorine is a stronger oxidizing agent than chlorine.
1. Under what conditions magnesium can reduce alumina?
2. Although thermodynamically feasible, in practice, magnesium metal is not used to Reduce alumina. Explain.
3. What are the values involved in using electrolytic reduction instead of chemical reduction for the extraction of aluminium?
Give reason