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hey!! Can any one give me a list of all the indicators and how they work? Thanks.
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abcde said:Nibz said:Hey guys, Assalam-o-Alaikum
These are some of the tips for Chemistry ATP (both O-level and IGCSE)
Some precautions:
=> Experiments involving poisonous gases like Nitrogen, Ammonia and Bromine -> Carry out the exp. in Fume Cupboard or in a well Ventilated Room.
Umm, Nibz, nitrogen is not toxic/poisonous. Otherwise, we'll all be dead breathing 78% of nitrogen in air 24/7!
abcde said:Umm, Nibz, nitrogen is not toxic/poisonous. Otherwise, we'll all be dead breathing 78% of nitrogen in air 24/7!
WayneRooney10 said:hey!! Can any one give me a list of all the indicators and how they work? Thanks.
burndtjamb said:For which substances can potassium dichromate be used as a test for?
To test for the presence of any reducing agent.burndtjamb said:For which substances can potassium dichromate be used as a test for?
TatsuEG said:WayneRooney10 said:hey!! Can any one give me a list of all the indicators and how they work? Thanks.
Universal Indicator:
Acid ( Red - Yellow) , Neutral ( Green) , Alkaline ( Blue - Violet)
Phenolphthalein:
Alkaline ( Pink) For Strong ( Colourless) , Neutral ( Colourless) , Acid ( Orange)
Methyl Orange:
Alkaline: ( Yellow) , Neutral ( Colourless) , Acid ( Red)
P.S Some of the indicators have a trend in colour , such as methyl orange from 1-14 colour becomes more pale
Hope that helped,
Thanks
dancingmaster said:TatsuEG said:WayneRooney10 said:hey!! Can any one give me a list of all the indicators and how they work? Thanks.
Universal Indicator:
Acid ( Red - Yellow) , Neutral ( Green) , Alkaline ( Blue - Violet)
Phenolphthalein:
Alkaline ( Pink) For Strong ( Colourless) , Neutral ( Colourless) , Acid ( Orange)
Methyl Orange:
Alkaline: ( Yellow) , Neutral ( Colourless) , Acid ( Red)
P.S Some of the indicators have a trend in colour , such as methyl orange from 1-14 colour becomes more pale
Hope that helped,
Thanks
Doesn't phenolphthalein only change colour in alkalis? Isn't it supposed to be colourless in acids? and what about the bromo-something blue? what colour changes does that have? PLEASE HELP!
Thanks AlotTatsuEG said:WayneRooney10 said:hey!! Can any one give me a list of all the indicators and how they work? Thanks.
Universal Indicator:
Acid ( Red - Yellow) , Neutral ( Green) , Alkaline ( Blue - Violet)
Phenolphthalein:
Alkaline ( Pink) For Strong ( Colourless) , Neutral ( Colourless) , Acid ( Orange)
Methyl Orange:
Alkaline: ( Yellow) , Neutral ( Colourless) , Acid ( Red)
P.S Some of the indicators have a trend in colour , such as methyl orange from 1-14 colour becomes more pale
Hope that helped,
Thanks
babyzee said:http://www.xtremepapers.me/CIE/Cambridge%20IGCSE/0620%20-%20Chemistry/0620_w09_qp_6.pdf can any help me with q5.. this questions come up a lot..and technique of doing these types. PLEASE HELP
babyzee said:Tatueg can you take me through one question like exactly how to do it
If only I had time!Math_angel said:Waalaikumassalam!!
wud like to gie a sugestion...post it as a word doc. as well..with all formatting i mean...it's more easier and better wen u see i wit different kin of colours and formatting and all tat
Anyways thanks a lot! Jazak ALlah Khair!! gud work!
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