The equilibrium constant for the following reaction is 1.0 × 10 23 : Cr 3+ ( a q ) + H 2 E D T A 2 − ( a q ) ⇌ C r E D T A − ( a q ) + 2 H + ( a q ) EDTA is used as a complexing agent in chemical analysis. Solutions of EDTA, usually containing the disodium salt Na 2 H 2 EDTA, are used to treat heavy metal poisoning. Calculate [Cr 3+ ] at equilibrium in a solution originally 0.0010 M in Cr 3+ and 0.050 M in H 2 EDTA 2− and buffered at pH = 6.00.
The equilibrium constant for the following reaction is 1.0 × 10 23 : Cr 3+ ( a q ) + H 2 E D T A 2 − ( a q ) ⇌ C r E D T A − ( a q ) + 2 H + ( a q ) EDTA is used as a complexing agent in chemical analysis. Solutions of EDTA, usually containing the disodium salt Na 2 H 2 EDTA, are used to treat heavy metal poisoning. Calculate [Cr 3+ ] at equilibrium in a solution originally 0.0010 M in Cr 3+ and 0.050 M in H 2 EDTA 2− and buffered at pH = 6.00.
Solution Summary: The author calculates the value of left[Cr+right] at equilibrium in a solution.
The equilibrium constant for the following reaction is 1.0 × 1023:
Cr
3+
(
a
q
)
+
H
2
E
D
T
A
2
−
(
a
q
)
⇌
C
r
E
D
T
A
−
(
a
q
)
+
2
H
+
(
a
q
)
EDTA is used as a complexing agent in chemical analysis. Solutions of EDTA, usually containing the disodium salt Na2H2EDTA, are used to treat heavy metal poisoning. Calculate [Cr3+] at equilibrium in a solution originally 0.0010 M in Cr3+ and 0.050 M in H2EDTA2− and buffered at pH = 6.00.
Question 5 of 14
Identify a correct comparison between MHC class I and class II molecules.
O MHC class I molecules present peptides generated by the destruction of intracellular cytosolic proteins, whereas class Il molecules present
peptides derived through phagocytosis.
O The structural features of the peptide-binding groove are provided by a and B chains for class I molecules and by a; and a subdomains for
class Il molecules.
O Both MHC class I and class II molecules are dissimilar in their three-dimensional structures but similar in composition and the types of
peptides they can bind.
O The peptide-binding groove of MHC class I molecules contains a single pocket for binding peptides, whereas the groove of class II molecules
contains two pockets.
Question 6 of 14
Identify the similarity between MHC class I and class II molecules.
O Both molecules contain two transmembrane subunits each.
O Both molecules possess promiscuous binding specificity.
O Both molecules accommodate peptides…
Indicate the correct option. Group 7 elementsa) form oxoanions with a tetrahedral geometry.b) with a d0 configuration they form complex oxoanions, isoelectronic with the perchlorate anion.c) both are incorrect.
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
What are CHNOPS? These Chemical Elements = 98% of Life | Biology | Biochemistry; Author: Socratica;https://www.youtube.com/watch?v=w90wFlR53VM;License: Standard YouTube License, CC-BY