Tests for acid and alkaline? Biology Paper 6.

[OxfordDreams]

Could someone help me out with the tests for acidity and alkalinity? Not in my book. Was reading that it's important. Thanks in advance!

 

[Dooouuu]

using litmus paper ... it will turn red if acid .... and blue if it alkali !

 

[OxfordDreams]

using litmus paper ... it will turn red if acid .... and blue if it alkali !

Thank you so much! Good luck for the paper tomorrow.

 

[Adahshan]

hydrogencarbonate indicator, red neutral, yellow acid and purple akaline.

Also PH meter or universal indicator, turning yellow/red acid, green neutral and purple/blue alkaline

 

[narutogirl]

if they want a specific value u could use universal indicator which i gues is more widely used in bio?

 

[OxfordDreams]

Thanks for all the help, guys. Wasn't expecting any replies nonetheless three, haha. Good luck!

 

[Cozmo35d]

but remember, hydrogen carbonate measures the ph level by measuring the level of CO2 in a solution, if a solution has alot of CO2 then it's acidic and hydrogen carbonate will turn the solution to yellow, the opposite changes the solution to red and that means it's basic.

 

[narutogirl]

but remember, hydrogen carbonate measures the ph level by measuring the level of CO2 in a solution, if a solution has alot of CO2 then it's acidic and hydrogen carbonate will turn the solution to yellow, the opposite changes the solution to red.

i think it will become purple when it is high in carbon dioxide but anyway i think they provide that in the exam

 

[Cozmo35d]

but remember, hydrogen carbonate measures the ph level by measuring the level of CO2 in a solution, if a solution has alot of CO2 then it's acidic and hydrogen carbonate will turn the solution to yellow, the opposite changes the solution to red.

i think it will become purple when it is high in carbon dioxide but anyway i think they provide that in the exam

yeah they did in the mock, it's purple when the solution is neutral.