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Kurian J
Subject: Chemistry
, asked on 23/2/18
Structure of if5 ??
Answer
1
Kurian J
Subject: Chemistry
, asked on 23/2/18
Structure of Clf5 ??
Answer
1
Kurian J
Subject: Chemistry
, asked on 23/2/18
Why is interhalogen compounds more reactive than halogen atoms ?
Explain with taking ICL as example ??
Answer
1
Varnika Dhiman
Subject: Chemistry
, asked on 23/2/18
Which is more stable..Bi3+ or Bi5+ ?!..
Also, which is more acidic.. Bi3+ or Bi5+ ?!..
[Asking these together, b'coz I wanna get a comparison between both of these. Acidity and stability of these two. Kindly answer both here, plus a comparison too, if possible.]
Answer
2
Varnika Dhiman
Subject: Chemistry
, asked on 23/2/18
Answer from the board's point of view.
Answer
1
Varnika Dhiman
Subject: Chemistry
, asked on 23/2/18
Question is in the image.
Answer
1
Varnika Dhiman
Subject: Chemistry
, asked on 22/2/18
Q). How could we say that ?!..
The vapour density of ammonia is 8.5. Therefore, it is lighter than air. Thus, it is collected by downward displacement of the air. Also, since ammonia gas is extremely soluble in water, it cannot be collected over water.
Answer
1
Varnika Dhiman
Subject: Chemistry
, asked on 22/2/18
Q). Kindly provide me the reason of the statement in the box. It's for group-15.
• Reactivity with oxygen
• All form two types of oxides:
E
2
O
3
a
n
d
E
2
O
5
.
• Acidic character of oxides decreases down the group
Answer
1
Varnika Dhiman
Subject: Chemistry
, asked on 22/2/18
Q. What do they mean by the underlined lines ?!.. Also, what does the equation represent ?!.. Kindly explain both the underlined lines, i.e., for phosphorus also.
• All oxidation states from +1 to +4 of nitrogen tend to disproportionate in acid solution
Example
3
H
N
O
2
→
H
N
O
3
+
H
2
O
+
2
N
O
• Nearly all intermediate oxidation states of phosphorus disproportionate into +5 and -3, both in alkali and acid
Answer
1
Varnika Dhiman
Subject: Chemistry
, asked on 22/2/18
Kindly explain both the points. These two points are for group-15 elements. [Explain both of these here only as they are similar and short.]
• Boiling points increase down the group
• Melting point increases up to arsenic, and then decreases up to bismuth
Answer
3
Laieeqa
Subject: Chemistry
, asked on 21/2/18
Boiling point of interhalogen compunds are liltle higher as compared to pure halogens
Answer
1
Sandra Saju
Subject: Chemistry
, asked on 20/2/18
In the following ions; Mn
3
+
, V
3
+
, Cr
3
+
, Ti
3
+
(a) Which is the most stable in an aqueous solution?
(b) Which ion is the strongest oxidizing agent?
(c) Which ion is colourless?
(d) Which ion has the highest number of unpaired electrons?
Answer
2
Megha Prasadan
Subject: Chemistry
, asked on 13/2/18
In the case of PH4+ and PH3 the bond pair-lone pair repulsion in PH3 causes the angle to reduce.
Then why in the case of HNH the angle value is higher than HPH, HAsH and HSbH angles?
Answer
1
Sandra Saju
Subject: Chemistry
, asked on 10/2/18
Give reason for the following: The stability of +5 oxidation state decreases down the group in group 15 of the periodic table.
Answer
1
Gunjan Behwal
Subject: Chemistry
, asked on 7/2/18
The stability of +5 oxidation state decreases and that of +3 oxidation state increases down the group in group 15 elements. Why?
Answer
2
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What are you looking for?
Explain with taking ICL as example ??
Also, which is more acidic.. Bi3+ or Bi5+ ?!..
[Asking these together, b'coz I wanna get a comparison between both of these. Acidity and stability of these two. Kindly answer both here, plus a comparison too, if possible.]
The vapour density of ammonia is 8.5. Therefore, it is lighter than air. Thus, it is collected by downward displacement of the air. Also, since ammonia gas is extremely soluble in water, it cannot be collected over water.
• Reactivity with oxygen
• All form two types of oxides: .
• Acidic character of oxides decreases down the group
• All oxidation states from +1 to +4 of nitrogen tend to disproportionate in acid solution
Example
• Nearly all intermediate oxidation states of phosphorus disproportionate into +5 and -3, both in alkali and acid
• Boiling points increase down the group
• Melting point increases up to arsenic, and then decreases up to bismuth
(a) Which is the most stable in an aqueous solution?
(b) Which ion is the strongest oxidizing agent?
(c) Which ion is colourless?
(d) Which ion has the highest number of unpaired electrons?
Then why in the case of HNH the angle value is higher than HPH, HAsH and HSbH angles?