it turns red[first it was purple
It is called denaturation
Lemon juice has more acid than cranberry juice. Lemon juice typically has a pH between 2 and 3, whereas cranberry juice usually has a pH closer to 2.5 to 3.5.
It's possible that the asparagus juice contains an indicator chemical which is reacting to the acid in the lemon juice. (Note that I don't know exactly which indicator is involved, or even if this actually happens; I'm just offering an explanation for the phenomenon you say you've observed.)
The pH of pure water is 7 (neutral). Adding lemon juice (which is acidic) will decrease the pH, making the solution more acidic. Lemon juice typically has a pH of around 2, so the pH of the water will decrease to a value closer to 2 when lemon juice is added.
When chalk is kept with lemon juice for 3 days, the acidic nature of the lemon juice can react with the calcium carbonate in the chalk. This reaction could potentially dissolve the chalk and cause it to break down or change in appearance.
it turns red[first it was purple
It gets wet.
water
if its pure lemon juice with no added sugar then it has no sugar in it. and most lemon juice are like that. its in lemon soft drinks and lemon cordials that add the sugars.
it dies
It is called denaturation
Possible formation of sodium citrate.
Because the chef added it to enhance the taste.
happpens
YES
it fomes
When you mix salt with lemon juice, the salt dissolves in the acidic lemon juice, creating a mixture that tastes both sour and salty. The combination of salt and lemon juice can enhance the flavors of certain dishes and is commonly used in cooking and seasoning.