Refer to the following equilibrium to answer the questions that follow. Consider
ID: 869323 • Letter: R
Question
Refer to the following equilibrium to answer the questions that follow.
Consider the reaction: FeCl3 + KSCN ? K3[Fe(SCN)6] + 3KCl
yellow colorless red colorless
Refer to the equilibrium shown above. Adding a couple of drops of an aqueous KCl solution will __________.
A) turn the solution less red
B) turn the solution clear
C) turn the solution red
D) have no effect on the color
6.
Which interaction is not used to maintain the tertiary structure of the protein?
A) hydrogen bonds
B) metallic bonds
C) disulfide bridges
D) salt bridges
7.
Amino acids combine to form polypetide by a reaction called __________.
A) oxidation
B) hydrolysis
C) condensation
D) redictopm
8.
A) an electron capture
B) an alpha emission
C) a neutron capture
D) an electron release
Explanation / Answer
5. C) turn the solution red
A deep red solution is formed when yellow FeCl3(aq) is mixed with colorless KSCN(aq).
The equation is
FeCl3(aq) + 3KSCN(aq) ? Fe(SCN)3(aq) + 3KCl(aq)
The red product is called iron(lll)thiocyanate
7.C) condensation