practicals Flashcards
What is mol/dm^3 in a titration equation?
This is the concentration
what is dm^3
decimetres cubed
what must you do to any unit to make it decimetres cubed-dm^3
divide the number by 1000 to make it decimetres cubed
What is the aim of titration?
The aim of titration is to find out the titrant. This is the amount of known solution added (usually an acid) to the unknown solution (usually alkali),you must add the known concentration until the solution turns neutral,you use this unit of added acid to work out the concentration of the unknown solution.
Why do we need to find out the titrant?
The titrant is used to figure out the concentration in the uknown solution in an equation.
what is dm^3 usually used to measure in the equations>
concentration=mol/dm^3 or volume=dm^3
What is a neutral colour for the indicator for phaenolphaelin
colourless
What is a neutral colour for Methyl Orange
Yellow
What is a constituent?
A consituent is a part of something
What is the goal of electrolysis?
It is the use of an electrical current to break down compounds containing ions,into their constituent elements.
What is the substance being broke down called in electrolysis?
Electrolytes
What are the electrodes made from?
Solids that conduct electricity
Where do the positively charged ions go to during electrolysis?
the cathode (negative electrode)
Where do negatively charged ions go in electrolysis?
The Anode (the positive electrode)
What is the difference between compounds and mixtures?
compounds are chemicallybonded and mixtures are not.