How was Chemistry unit-5, 19/06/2013

[SiaSiaSia]

I think it was c3h8, because then the equation will be c3h8 + 5o2 = 3co2 + 4h2o and so for 50 c3h8 u will need 250 o2 and 150 co2.

 

[Dead soul]

For the MCQ of the burning hydrocarbon identification...what was the answer?

B C3H8

 

[Dead soul]

what was the ans for the addition of CO2? was it D?

I thought it was 'raises the pH'...

 

[Dead soul]

What was the products of the reaction between CH3CH2CH2CH2NH2 & H2SO4 and
CH3CH2CH2CH2NH2 & CH3COOH?

I wrote CH3CH2CH2CH2NH3+HSO4- & CH3CH2CH2CH2NH3+CH3COO-

n what was the value of concentration in 2nd last part of the paper? \
1.8 mol/dm3?

 

[Dead soul]

What about the ctalyst one? i gave no change in oxd no.

Yea, dat was D

 

[qstar.inc]

I got C3H8!!I made some silly mistakes but overall um expecting an A in chem

i got A C3H4

C5H10...i literally had no time to think <1min

I'm mentioned C5H12.. ...wbu?

C3H8

 

[$DasKitoz$]

Wht did u get for the electrode potential of the cell?

i think i got 0.8-(-0.4)

 

[$DasKitoz$]

What was the products of the reaction between CH3CH2CH2CH2NH2 & H2SO4 and
CH3CH2CH2CH2NH2 & CH3COOH?

I wrote CH3CH2CH2CH2NH3+HSO4- & CH3CH2CH2CH2NH3+CH3COO-

n what was the value of concentration in 2nd last part of the paper? \
1.8 mol/dm3?

i got the same answers !!!!

 

[Dead soul]

i got the same answers !!!!

what abt da one abt structure n bonding of TICL4 N TIO2?

 

[Dead soul]

i got the same answers !!!!

what abt da one abt da structure n bonding of TICL4 N TIO2?

 

[$DasKitoz$]

what abt da one abt da structure n bonding of TICL4 N TIO2?

i wrote dat there are strong ionic bonding and dat lot of energy is required to overcome these forces.
wat did u write ?

 

[Dead soul]

i wrote abt dipole interactions in TIO2...

 

[V Kandiah]

What was the products of the reaction between CH3CH2CH2CH2NH2 & H2SO4 and
CH3CH2CH2CH2NH2 & CH3COOH?

I wrote CH3CH2CH2CH2NH3+HSO4- & CH3CH2CH2CH2NH3+CH3COO-

n what was the value of concentration in 2nd last part of the paper? \
1.8 mol/dm3?

First answer is Ok but the second is CH3CH2CH2CH2NHCOCH3 & H2O surely

 

[Dead soul]

amides r formed when amines react with acid chloride

 

[Xainab]

First answer is Ok but the second is CH3CH2CH2CH2NHCOCH3 & H2O surely

First answer is Ok but the second is CH3CH2CH2CH2NHCOCH3 & H2O surely

Wouldnt it be CH3CONHCH2CH2CH2CH3?

 

[V Kandiah]

amides r formed when amines react with acid chloride

It should be CH3COONH2CH2CH2CH2CH3 not amide sorry! Thanks for correcting me
propyl ammonium ethanoate like ammonium ethanoate where one of the hydrogen is replaced by propyl group

 

[tanzina500]

C3H8

Why are u crying?

 

[NiazK98]

What do you people think about the grade boundaries? The paper was easy i think but many people did bad.

 

[qstar.inc]

Why are u crying?

my exam haven't gone well!

 

[tanzina500]

my exam haven't gone well!

Dnt worry the results will good!!