Nabteb Chemistry Practical Answers And Expo 2016
Next time learn how to subscribe, our subscribers as already seen answers since 7am.
NABTEB CHEMISTRY ANSWERS
2 ai)
(39 )(19 )K
Period 4 , Group 1
19 = 1 S ^ 22 S ^ 22 P ^ 2 x2 P ^ 2 P ^ 2 Z3 S ^ 23 P ^ 2 X 3 p ^ 2 y 3 P ^ 2 Z4 S ^ 1
2 aii)
(24 )(12 )Mg
Period 3 , Group 2
12 = 1 S ^ 22 S ^ 22 p^ 2 x 2 P ^ 2 y 2 p^ 2 Z3 S ^ 2
2 aiii )
(32 )(16 )S
Period 3 , Group 6
1 S ^ 22 S ^ 22 P ^ 2 x 2 P ^ 2 y 2 P ^ 2 Z3 S ^ 23 P ^ 2 x 3 P ^ 2 y 3 P ^ 2 Z
2 bi)
They have their spin numbers parallel to each other
2 bii )
They are used as catalyst because they retain their chemical properties when subjected to change in physical nature
2 biii)
They form coloured ions because gthey have different sub- orbitals of d whose wavelength is the same with that of electronic radiations
2 ci)
Acid anhydride are chemical substance which dissolves in wateer to give hydrogen ions eg H 2 SO3 , HNO2
2 cii)
HNO2 , H 2 SO3
2 ciii )
They contain ioons which are mobile in water
– They are usually solids and liquids
– They conduct electricity in molten form
– They dissolve in polar solvent eg water
– They are insoluble in non polar solvent eg ethanol
2 di)
– They have high boiling point
– They have high melting point
– They are ductile ie they can be drawn into shapes
– They are malleable
3 ai)
It states that all pure samples of the same compound contain the same elements combine in the same proportion by mass
3 aii)
– They have the s sub orbital
– They are soft metals
– They occupy group1 of the periodic table
– Their carbonates are soluble in water
– They are the most electropositive metals
– Their nitrates decompose to give nitrites and oxygen
2 NaNO3 – > 2 NaNO2 (s ) O 2 (g)
3 b)
Using dilution formular
C 1 V 1 =C 2 V 2
25 * 1 =0 .2 * V 2
V 2 =25 * 1 / 0 . 2
V 2 =125 cm ^ 3
3 ci)
– Fat are solids , oils are liquids
– Fats have high boiling point oil have low boiling point
3 cii)
Vegetable oil can be converted to margarine by the process called Hydrogenation. By passing the hydrogen into oil at a temperature of 200 degrees C using Nickel or platinum catalyst , The liquid oil is converted into solid fat
3 ciii )
Potasium heptadicromate VI .Na2 Cr 2 O 7
3 d)
2 Zn(NO 3 )2 (s )- > 2 ZnO (s ) 2 NO 2 (g) 3 O 2 (g)
3 dii )
Nitroen IV oxide and oxygen
5 ai)
(C 6 H10 O 5 )n – > C 12 H 22 O 11
C 12 H 22 O 11 – > (H 2 O )C 6 H 12 O 6 C 6 H 12 O6
C 6 H12 O 6 – > 2 C 2 H5 OH (l) 2 CO2 (g )
5 aii)
– It is miscible with water in al proportions
– Igt is neutral to litmus paper
– The boiling point is 78 degrees C
5 bi)
HCOOH- Methanoic acid
CH3 COOH – Ethanoic acid
C 2 H5 COOH – Propanoic acid
5 bii )
Esterification
5 c )
C H O
(54 . 5 / 12 ) (9 . 10 / 1 ) (36 . 4 / 16 )
4 .54 9 .10 2 . 275
Divide by the smallest value
(4 .54 / 2 .275 ) (9 .10 / 2 . 275 ) (2 . 275 / 2 . 275 )
1 .99 4 1
2 4 1
C 2 H4 O ethanol
1 a )
i )the gas molecules moves in straight lines colliding with one another
ii )the collisions of the gas molecules are perfectly elastic
iii )the cohesive forces between the gas molecules is perfectly elastic
1 aii)
V 1 / T1 =V 2 / T2
where V 1 = 125 cm ^ 3
V 2 =? T1 = 17 dgree census, T2 = 100 dgree census
125 / 17 =V 2 / 100
12500 / 17 = V 2
V 2 =735 .29 cm ^ 3
1 bi)
tabulate
i )Acidic- NO 2 , P 4 O 10
ii )Basic – Na2 O, C 4 O
iii )neutral – CO, N2 O
iv )Amphoteric – AL 2 O 3 , ZnO
1 bii )
acid is any substance which produces hydrogen ion H ^ or hydrozonium as the only positive ion when reacted with water
1 ci)
the raw materials are sulplur, oxygen , tetraoxo – sulphate(vi )acid , vanadium(v )oxide and air
1 cii)2 So 2 O2 < - - - - - - - - - - > 2 SO3 Heat
1 ciii )vanadium(V )oxide
========≠==============
Nabteb 2016 Chemistry answers free obj and Theory answers. Nabteb chemistry Expo And Answers. Nabteb Chemistry 2016 2017 runz real correct 100% runs
2016 free CHEMISTRY Nantes Expo free runz naijacamp fluxwap wapbaze funloaded.
How to subscribe For Nabteb Chemistry Real correct answer and get answers very fast.
Direct Mobile Answers To Phone: #600 MTN card.
Send Mtn 600 pin + your phone number + I paid for Nabteb Chemistry direct SMS answers To 08141160376
WhatsApp Group Answers : #300 MTN card.
Message this number 08141160376 on whatsapp and send your mtn 300 card to that number. Then you will be added to our Answers group.
Password Page answers : #200 MTN card.
Send mtn #200 to 07039779957 i paid for Nabteb Chemistry.
After loading the card, you will be sent The password page link and pin to view chemistry answers within 30mins
.
Note: Don't call non of the numbers on your screen because the lines as been diverted and it won't go, just send the card we are gonna reply you very soon. No calls please. Thanks.
Note: Direct mobile subscribers get the answers first. We send answers 1hour before the exam starts to all our subscribers but direct mobile sees answers first.
Pay first receive answers first. Start paying before it too late.
Love you all
NABTEB CHEMISTRY ANSWERS
2 ai)
(39 )(19 )K
Period 4 , Group 1
19 = 1 S ^ 22 S ^ 22 P ^ 2 x2 P ^ 2 P ^ 2 Z3 S ^ 23 P ^ 2 X 3 p ^ 2 y 3 P ^ 2 Z4 S ^ 1
2 aii)
(24 )(12 )Mg
Period 3 , Group 2
12 = 1 S ^ 22 S ^ 22 p^ 2 x 2 P ^ 2 y 2 p^ 2 Z3 S ^ 2
2 aiii )
(32 )(16 )S
Period 3 , Group 6
1 S ^ 22 S ^ 22 P ^ 2 x 2 P ^ 2 y 2 P ^ 2 Z3 S ^ 23 P ^ 2 x 3 P ^ 2 y 3 P ^ 2 Z
2 bi)
They have their spin numbers parallel to each other
2 bii )
They are used as catalyst because they retain their chemical properties when subjected to change in physical nature
2 biii)
They form coloured ions because gthey have different sub- orbitals of d whose wavelength is the same with that of electronic radiations
2 ci)
Acid anhydride are chemical substance which dissolves in wateer to give hydrogen ions eg H 2 SO3 , HNO2
2 cii)
HNO2 , H 2 SO3
2 ciii )
They contain ioons which are mobile in water
– They are usually solids and liquids
– They conduct electricity in molten form
– They dissolve in polar solvent eg water
– They are insoluble in non polar solvent eg ethanol
2 di)
– They have high boiling point
– They have high melting point
– They are ductile ie they can be drawn into shapes
– They are malleable
3 ai)
It states that all pure samples of the same compound contain the same elements combine in the same proportion by mass
3 aii)
– They have the s sub orbital
– They are soft metals
– They occupy group1 of the periodic table
– Their carbonates are soluble in water
– They are the most electropositive metals
– Their nitrates decompose to give nitrites and oxygen
2 NaNO3 – > 2 NaNO2 (s ) O 2 (g)
3 b)
Using dilution formular
C 1 V 1 =C 2 V 2
25 * 1 =0 .2 * V 2
V 2 =25 * 1 / 0 . 2
V 2 =125 cm ^ 3
3 ci)
– Fat are solids , oils are liquids
– Fats have high boiling point oil have low boiling point
3 cii)
Vegetable oil can be converted to margarine by the process called Hydrogenation. By passing the hydrogen into oil at a temperature of 200 degrees C using Nickel or platinum catalyst , The liquid oil is converted into solid fat
3 ciii )
Potasium heptadicromate VI .Na2 Cr 2 O 7
3 d)
2 Zn(NO 3 )2 (s )- > 2 ZnO (s ) 2 NO 2 (g) 3 O 2 (g)
3 dii )
Nitroen IV oxide and oxygen
5 ai)
(C 6 H10 O 5 )n – > C 12 H 22 O 11
C 12 H 22 O 11 – > (H 2 O )C 6 H 12 O 6 C 6 H 12 O6
C 6 H12 O 6 – > 2 C 2 H5 OH (l) 2 CO2 (g )
5 aii)
– It is miscible with water in al proportions
– Igt is neutral to litmus paper
– The boiling point is 78 degrees C
5 bi)
HCOOH- Methanoic acid
CH3 COOH – Ethanoic acid
C 2 H5 COOH – Propanoic acid
5 bii )
Esterification
5 c )
C H O
(54 . 5 / 12 ) (9 . 10 / 1 ) (36 . 4 / 16 )
4 .54 9 .10 2 . 275
Divide by the smallest value
(4 .54 / 2 .275 ) (9 .10 / 2 . 275 ) (2 . 275 / 2 . 275 )
1 .99 4 1
2 4 1
C 2 H4 O ethanol
1 a )
i )the gas molecules moves in straight lines colliding with one another
ii )the collisions of the gas molecules are perfectly elastic
iii )the cohesive forces between the gas molecules is perfectly elastic
1 aii)
V 1 / T1 =V 2 / T2
where V 1 = 125 cm ^ 3
V 2 =? T1 = 17 dgree census, T2 = 100 dgree census
125 / 17 =V 2 / 100
12500 / 17 = V 2
V 2 =735 .29 cm ^ 3
1 bi)
tabulate
i )Acidic- NO 2 , P 4 O 10
ii )Basic – Na2 O, C 4 O
iii )neutral – CO, N2 O
iv )Amphoteric – AL 2 O 3 , ZnO
1 bii )
acid is any substance which produces hydrogen ion H ^ or hydrozonium as the only positive ion when reacted with water
1 ci)
the raw materials are sulplur, oxygen , tetraoxo – sulphate(vi )acid , vanadium(v )oxide and air
1 cii)2 So 2 O2 < - - - - - - - - - - > 2 SO3 Heat
1 ciii )vanadium(V )oxide
========≠==============
Nabteb 2016 Chemistry answers free obj and Theory answers. Nabteb chemistry Expo And Answers. Nabteb Chemistry 2016 2017 runz real correct 100% runs
2016 free CHEMISTRY Nantes Expo free runz naijacamp fluxwap wapbaze funloaded.
How to subscribe For Nabteb Chemistry Real correct answer and get answers very fast.
Direct Mobile Answers To Phone: #600 MTN card.
Send Mtn 600 pin + your phone number + I paid for Nabteb Chemistry direct SMS answers To 08141160376
WhatsApp Group Answers : #300 MTN card.
Message this number 08141160376 on whatsapp and send your mtn 300 card to that number. Then you will be added to our Answers group.
Password Page answers : #200 MTN card.
Send mtn #200 to 07039779957 i paid for Nabteb Chemistry.
After loading the card, you will be sent The password page link and pin to view chemistry answers within 30mins
.
Note: Don't call non of the numbers on your screen because the lines as been diverted and it won't go, just send the card we are gonna reply you very soon. No calls please. Thanks.
Note: Direct mobile subscribers get the answers first. We send answers 1hour before the exam starts to all our subscribers but direct mobile sees answers first.
Pay first receive answers first. Start paying before it too late.
Love you all
No comments