keizhacarbajal7097 keizhacarbajal7097
  • 22-08-2020
  • Chemistry
contestada

Student perfotms a Benedict's test on an unknown substance. He adds reagent(the chemical required to make a color change), and nothing happens. What can you conclude?

Respuesta :

pstnonsonjoku
pstnonsonjoku pstnonsonjoku
  • 22-08-2020

Answer:

Reducing sugars are absent

Explanation:

Benedict's solution is an substance used in testing sugars. It is mixture of sodium carbonate, sodium citrate and copper(II) sulfate pentahydrate. It can be used instead of Fehling's solution in testing for the presence of reducing sugars.

Reducing sugars contain the -CHO group. If there is no colour change after the addition of Benedict's solution, then we can conclude that reducing sugars are absent.

Answer Link

Otras preguntas

Welsh language, literature,music,and culture are promoted at the festival.What is the complete predicate? Please help me! :)
For all x, (3x + 7)² = ? A. 6x + 14 B. 6x² + 14 C. 9x² + 49 D. 9x² + 21x + 49 E. 9x² + 42x + 49 Can anyone explain how to make it step by step?
p = 3n+3ui need to solve for n
What does a plant let out during photosynthesis?
The idea that "the invisible hand" of competition sets prices and determines quantities produced in a market economy was the principle idea of?
What London locale, where many poor writers lived, became synonymous with hacks and scandal mongers? a) Elephant and Castle b) Grub Street c) Covent Garden d) C
what is the difference between to and too?
How to factor completely:  15x²-40x-15
How can forests provide a sustainable yield?
Which European colonial power took control of Malaya and built the port at Singapore?