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The litmust turns blue. (Red in acid).
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∙ 10y ago
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Mg on red litmus paper acid or base?
The paper changes colour from red to blue. This is because when you mix MgO with water, you now have Mg(OH)2 solution which is basic and hence changes the colour of red litmus paper to blue.
Why do you swirl the Erlenmeyer flask?
To mix the reactants. Assuming you have been doing a titration experiment and I am doing your homework its so as you add the acid/alkali you can accuratly close the biuret when the indicator changes colour.
When acid reacts with alkali what happens?
When an acid reacts with an alkali, it forms a salt along with water. For example, when hydrochloric acid reacts with sodium hyroxide(an alkali), it forms sodium chloride(common table salt) & water.
What is neutralsation?
its wear you mix acids to alkali
What happens when you mix an alkali with oil?
They mix together since they are both bases.
What happens when you mix blue litmus paper in bases?
Blue litmus does not change when placed in a basic solution.
If you make litmus from red cabbage what colour does acid turn when you mix them?
Pink.
Mg on red litmus paper acid or base?
The paper changes colour from red to blue. This is because when you mix MgO with water, you now have Mg(OH)2 solution which is basic and hence changes the colour of red litmus paper to blue.
What is used to cancel out an acid and alkali?
you mix them up and see what colour it goes
Why do you swirl the Erlenmeyer flask?
To mix the reactants. Assuming you have been doing a titration experiment and I am doing your homework its so as you add the acid/alkali you can accuratly close the biuret when the indicator changes colour.
When acid reacts with alkali what happens?
When an acid reacts with an alkali, it forms a salt along with water. For example, when hydrochloric acid reacts with sodium hyroxide(an alkali), it forms sodium chloride(common table salt) & water.
What would happen if you mix a strong base and a weak acid?
Neutralization is more likely to be H+ from acid reaction with OH- of alkali.
What happens if you mix alkali metals with oxygen?
Alkali metals oxides are the result of these reactions.
What is neutralsation?
its wear you mix acids to alkali
What happens when you mix an alkali with oil?
They mix together since they are both bases.
When you mix a few drops of phenolphthalein solution to a beaker of pure water mixed with calcium hydroxide what happens?
the colour changes to pink
What are the steps to do the biuret test?
1) Add 2cm3 of solution to be tested to a test-tube. 2) Add an equal volume of 5% potassium hydroxide* solution and mix. 3) Add 2 drops of 1% copper sulphate solution and mix. A mauve or purple colour develops if protein is present. *Sodium hydroxide solution can be used instead of potassium hydroxide solution.
