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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.
What happens when you mix a strong alkali with water?
When a strong alkali is mixed with water, it will dissociate into ions, resulting in the formation of hydroxide ions. This process releases heat, known as heat of neutralization. Additionally, the pH of the solution will increase due to the high concentration of hydroxide ions.
What is the reaction called when an alkali and a acid mix togeteher?
When an alkali and an acid mix together, they undergo a neutralization reaction. During this reaction, the hydrogen ions from the acid react with the hydroxide ions from the alkali to form water and a salt.
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 used to cancel out an acid and alkali?
you mix them up and see what colour it goes
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.
If you make litmus from red cabbage what colour does acid turn when you mix them?
Acid will turn red cabbage litmus solution to a reddish color. This is because the anthocyanin pigments in red cabbage change color in response to changes in pH levels, turning red in acidic conditions.
What happens when you mix blue litmus paper in bases?
Blue litmus does not change when placed in a basic solution.
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.
What happens when you mix a strong alkali with water?
When a strong alkali is mixed with water, it will dissociate into ions, resulting in the formation of hydroxide ions. This process releases heat, known as heat of neutralization. Additionally, the pH of the solution will increase due to the high concentration of hydroxide ions.
What colour do you get if you mix yellow and red?
It Makes the Colour Orange
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.
What is the reaction called when an alkali and a acid mix togeteher?
When an alkali and an acid mix together, they undergo a neutralization reaction. During this reaction, the hydrogen ions from the acid react with the hydroxide ions from the alkali to form water and a salt.
Why were you instructed to keep swirling the 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.
What happens if you add hydrogen ions to a neutral solution?
If you mix an neutral and an acid, The pH of the solution will be closer to 7 (neutral).Also if you mix an acid with an alkali (providing they are around the same strengh) it will turn neutral. Its like mixing orange juice with water, The juice is acid and the water is neutral, put water in the juice and it become weaker.
When does a neutralisation reaction occurs?
when there is an equal mix of acid and alkali
