6.1/R2.2.1 Analyse data from rate experiments [SL IB Chemistry]

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Graphs and more graphs plus traps to avoid!

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I just found you. You have no idea how much I love you right now. No. Idea. THANK YOU!!!

alisastevens

A big or a small triangle should will the same value - but a bigger one is easier to measure.

ibchemvids

2.5 is the staring time used with the tangent on the curve

ibchemvids

At 4:41, you say the pink line is when there is 0.5 M H2SO4. Then at 5:32, you say the orange line is 0.5 M H2SO4. Why does dividing the molarity by 2 result in different graphs? Thanks!

devika

Well spotted, I should have done final minus initial to get the negative number - I will fix it now.

ibchemvids

Hey Richard! Your videos are awesome, I have just one question! I did not understand very well how do you get the rate of the reaction using the graph?

armandocuadros

Hi - I got a bit confusd around 4:45...you show the pink line to demonstrate what happens if you change the concentration of the sulfuric acid (i.e. 0.5M is the pink line), but then you draw the orange line and say that that represents the graph for a lower concentration of sulfuric acid...so which one is it? Or am I completely missing something here...?

sidtube

i think there is some mistake with the last problem, it should be rate at 0.2 (M). it is mentioned rate at t=20s

Afzalmailrocks

Hey sir, 6:39 here I couldn't understand why we got 25 for time and the mass is between 0.6-0.2. Because the question says t = 20. So I thought we would get t: 20 and the mass would be between 0.6-0.0. I'm confused, can you explain? Thanks.

janekth

LOL "HEAR IN BLACK AND WHITE"

RahulRana

I'm confused about the negative sign that results from finding the gradient on this type of curve.. You specifically switched final and initial in your calc and I was wondering if there is a reason for that?

awesomesheen

hello! i am a bit confused.
why is it 0.2-0.6/25-2.5 and not 0.6-0.2/25-2.5 ?
Thanks :) your videos are very helpful !

sadhanakoganti

at 0:50, the graph looks a lot like a radioactive decay %mother-nucleei and %daughter nuclei graph

gatosardinaful

Couldn't you just calculate 20/0.4 ? Because it's instantaneous rate?

chocogoodness

What software are you using? It's not paint, then what is it?

amirpouya

6.1/R2.2.1 Analyse data from rate experiments [SL IB Chemistry]

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