Physics, Chemistry and Biology: Post your doubts here!

[Muaaz Iqbal]

Part G and H I'm really facing Problem in Titration

 

[Saad the Paki]

What year is this ?

Y....so u can check the ms?
its m/j 12 p62

 

[Muaaz Iqbal]

Saad the Paki Which Varient are u giving

 

[Kiara P.]

Y....so u can check the ms?
its m/j 12 p62

Lol. A double check never harmed anybody!

Okay so , since the boiling tube in B was kind of tilted downwards this had produced an inverse effect of what really should happen making a temperature difference between the hot water at the boiling tube accumulated at the CoCl2 as if you noticed the heat/ Bunsen Burner was applied there making it there steamy hot and the cold temperature at the test tube , thus as it's tilted this makes the cold water in the test tube rise up as it get to be condensed by the heating effect traveling by the liebig condenser into the cold water making it go back to the boiling tube resulting the hot and cold water to meet thus whenever you face a two different temperature substance meeting together this usually brings up energy,But in either ways B looks wrong lol..so yeaps !

 

[Saad the Paki]

Saad the Paki Which Varient are u giving

61

 

[NOneed2speedd]

Can some one tell exact and simple answer

 

[Kiara P.]

If we had Nitrate and Ammonium and we wanted to test these ions.Now I know that both sodium Hydroxide shall be added to them...
But nitrate is oxidized thus it has to be reduced, so what shall we add to it to reduce it..?

 

[Saad the Paki]

If we had Nitrate and Ammonium and we wanted to test these ions.Now I know that both sodium Hydroxide shall be added to them...
But nitrate is oxidized thus it has to be reduced, so what shall we add to it to reduce it..?

Pieces of aluminium foil

 

[DANISH182]

whats is the meaning of burns with a sooty flame?

 

[Saad the Paki]

Can some one tell exact and simple answer

Add equal masses of Mg to both acids
Bubbles of hydrogen produced
Comapre the rate of formation of bubbles
The acid that gives rapid effervescence is more cocentrated

 

[Saad the Paki]

whats is the meaning of burns with a sooty flame?

Its when the flame produces a black smoke (carbon monoxide)
soot is another name for carbon

 

[NOneed2speedd]

Thanks AGAIN

Add equal masses of Mg to both acids
Bubbles of hydrogen produced
Comapre the rate of formation of bubbles
The acid that gives rapid effervescence is more cocentrated

 

[masterex567]

Is anyone giving Paper 5?
Please look at m/j/13 51
the last question you had to identify the liquid! And the answer was vinegar or ethanoic acid? How do you even test for such

 

[NOneed2speedd]

Good luck to everyone giving p6 tomorrow

 

[Ahmed Elsiddig]

does anyone know the capacity of burettes and pippetes and measurin cylindders

 

[Saad the Paki]

does anyone know the capacity of burettes and pippetes and measurin cylindders

Burette is 50cm^3
Measuring cylinders have different capacities..
pipette is usually 25cm^3

 

[Mr.Physics]

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Part G and H I'm really facing Problem in Titration

ye question bohut mushkil hay !! May june 2014 paper 61 hay na ??

 

[Mr.Physics]

Saad the Paki help me with this question plz ! May june 2014 paper 61 Q4 (g)

 

[Muaaz Iqbal]

ye question bohut mushkil hay !! May june 2014 paper 61 hay na ??

Haan hay..

 

[Mr.Physics]

Haan hay..

No I meant that is this question from mj 2014 p61 ??