Chemistry Practical 26th Oct - How was it?

[Evil_Maknae]

So guys how was it? What cations you got?

Ps: sorry I meant 25th Oct... My bad

 

[ijjukittu]

So guys how was it? What cations you got?

Ps: sorry I meant 25th Oct... My bad

Cu2+
Al3+
Pb2+
Fe3+

 

[Kumkum]

Cu2+
Al3+
Pb2+
Fe3+

i got those too!

 

[babycry]

i got those too as well as magnesium

 

[TeKnOzOr]

Hmmmm yeahh...indeed...those are the cations!!
And for the last part,the answers are:
-Chloride
-Iodide
-Insufficient tests
If you got these,just shout "Yeahhhhhhhhhhhhhhhhh......." lolz
Overall,quite easy practical

 

[babycry]

Hmmmm yeahh...indeed...those are the cations!!
And for the last part,the answers are:
-Chloride
-Iodide
-Insufficient tests
If you got these,just shout "Yeahhhhhhhhhhhhhhhhh......." lolz
Overall,quite easy practical

yeah i got exactly the same man

 

[dman7000]

Hmmmm yeahh...indeed...those are the cations!!
And for the last part,the answers are:
-Chloride
-Iodide
-Insufficient tests
If you got these,just shout "Yeahhhhhhhhhhhhhhhhh......." lolz
Overall,quite easy practical

yeeeeaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaahhhhhhhhhhhhhhhhhhhhh i got that also !!!!

 

[dman7000]

how do you calculate percentage uncertainty?

 

[babycry]

the +- 2/+-8 divided by the time recorded, then multiply by 100

 

[Kumkum]

yep!!!!!!!!!
the practicals were kinda easy!

 

[Muniba Suhail]

What were the answers, in the first question, to those asked after the graph?

 

[messi10]

What were the answers, in the first question, to those asked after the graph?

1. Less surface area, so quick time.
2. 0.03 concentration
3. Directly proportional.

 

[Kumkum]

1. Less surface area, so quick time.
2. 0.03 concentration
3. Directly proportional.

i wrote less surface area and directly proportional but couldn't find the concentration.

 

[messi10]

i wrote less surface area and directly proportional but couldn't find the concentration.

it was
(0.15/50)*10

I was unable to find this either neither the surface area answer, got it after the exam lol.

 

[Nishii]

the +- 2/+-8 divided by the time recorded, then multiply by 100

i multiplied the errors by 2 then divided by the respective volume and multiplied by 100!

 

[babycry]

1. Less surface area, so quick time.
2. 0.03 concentration
3. Directly proportional.

for concentration i first got 0.03. then i realised that u had to use the total volume which included volume of acid used, so then i got 0.021 moldm3.

 

[babycry]

i multiplied the errors by 2 then divided by the respective volume and multiplied by 100!

i think only in analogue apparatus u multiply uncertainty by 2, and check this
http://www.avogadro.co.uk/miscellany/errors.htm
in the questions it doesnt multiply by 2.. but u may be correct i dno

 

[Nishii]

for concentration i first got 0.03. then i realised that u had to use the total volume which included volume of acid used, so then i got 0.021 moldm3.

i lost 2 points in that too!

 

[Hehehaha]

it sucks

 

[Kumkum]

it sucks

what sucks....chem practical?