I did paper 34 yesterday.
For the first titration, I was super fast. I had already completed four titrations and gotten two values close to each other, while others were struggling with their second titration. But fate played a cruel trick on me. I was soooo happy I had finished the first one so fast and i decided to go on my second, with the same enthusiasm. While I was heating the required solution, I decided it would be a good idea to keep another flask filled, and heat it while I did the titration to save some time. I did that, and I started to write down some answers related to the first titration. I totally forgot about filling the burette with the potassium manganate or whatever it was, and the temperature had already risen to 85 degrees when I realized this.
So I hurried to fill my burette with the pink chemical. I poured and poured, panicking like anything, and started to wonder (when the beaker was half empty) why the burette was not filling up. I realized just then that the burette tap was open! IT WAS OPEN AND I HAD LEAKED AROUND 75% OF MY CHEMICAL!!!!!! The guy there told me I couldn't get any more. I still had enough chemical to do two titrations, and I took the flask, which was boiling hot to a hundred degrees by this time, and titrated with it. BIGGEST MISTAKE EVER!!!!!! I should've thrown it away! It went to a brown colour, and had to be discarded. I still could do one more, I thought as I took the flask off at 80 degrees exactly this time and started to titrate. As I was halfway through, I looked at the burette once.
WHY ARE YOU DOING THIS, GOD???? I ASKED!!!!!
I had totally forgotten to fill the burette to the zero mark, or take the reading of the burette before I titrated, after I finished (or rather, spoiled) my last one. This one was gone too..............................
Are you still reading? Do you sympathize with me? I know you do.......
For the first titration, I was super fast. I had already completed four titrations and gotten two values close to each other, while others were struggling with their second titration. But fate played a cruel trick on me. I was soooo happy I had finished the first one so fast and i decided to go on my second, with the same enthusiasm. While I was heating the required solution, I decided it would be a good idea to keep another flask filled, and heat it while I did the titration to save some time. I did that, and I started to write down some answers related to the first titration. I totally forgot about filling the burette with the potassium manganate or whatever it was, and the temperature had already risen to 85 degrees when I realized this.
So I hurried to fill my burette with the pink chemical. I poured and poured, panicking like anything, and started to wonder (when the beaker was half empty) why the burette was not filling up. I realized just then that the burette tap was open! IT WAS OPEN AND I HAD LEAKED AROUND 75% OF MY CHEMICAL!!!!!! The guy there told me I couldn't get any more. I still had enough chemical to do two titrations, and I took the flask, which was boiling hot to a hundred degrees by this time, and titrated with it. BIGGEST MISTAKE EVER!!!!!! I should've thrown it away! It went to a brown colour, and had to be discarded. I still could do one more, I thought as I took the flask off at 80 degrees exactly this time and started to titrate. As I was halfway through, I looked at the burette once.
WHY ARE YOU DOING THIS, GOD???? I ASKED!!!!!
I had totally forgotten to fill the burette to the zero mark, or take the reading of the burette before I titrated, after I finished (or rather, spoiled) my last one. This one was gone too..............................
Are you still reading? Do you sympathize with me? I know you do.......
