Lemon juice contains citric acid so blue litmus paper dipped in lemon juice will turn red indicating that it is acidic.
Blue litmus paper become red in acidic solutions (lemon juice contain citric acid).
Lemon Juice (i tried)
Take a cup of lemon juice and three pennies and put all three pennies in the cup of lemon juice and leave it in there for 3 days and see what happens to the pennies.
Yes, over time the citric acid can corrode the metal and the resulting ions will dissolve in the solution of the lemon juice.
lemon juice or vinegar and some newspaper
Lemons can turn red after cutting because they are oxidizing. To prevent this, use lemons immediately after cutting or juice them.
what is the initial and final colour of the lemon juice
When dipped in lemon juice, pH paper typically turns red or pink. This indicates that the lemon juice is acidic.
blue
It will become red !
Lemon juice contains citric acid so blue litmus paper dipped in lemon juice will turn red indicating that it is acidic.
A green-y yellow.
Lemon juice is an acid and blue litmus paper turns red when dipped in an acidic liquid.
red
the colour of lemons
Red
No colour change, just a very light watery yellow colour that comes out of a lemon.
Brown!