Answer:
Benedict's solution is the indicator for sugar which is made up from copper sulfate and sodium hydroxide
the positive result is the observation of brick-red precipitate.
Sorry the photo isn't clear
Answer: Exhaled air containing Carbon dioxide bubbles react with water to form carbonic acid . The solution turn acidic and turn from green to yellow.
Explanation:
Exhaled carbondioxide bubbles reacts with water to form carbonic acid, the solution will turn acidic. Carbonic acid is a weak acid that decrease pH. An indicator of it shows that the solution turns from green to yellow.
Co2+ H2O= H2Co3.
The solution then dissociate to give H ion and hydrogen carbonates ion.
Answer:
I think itś D
Sorry I don't take this course, but I try to help everyone
He is most likely to suffer some loss of visual perception.
