When you separate the major detail from the minor details, you should understand that facts, evidence and details in a paragraph are not equally important.
【单选题】The following curve may correspond to the titration of
A.
5.00mL of a 0.080 M diprotic acid, H 2 A prefix="o" ns="urn:schemas-microsoft-com:office:office"? ?xml:namespace>
B.
5.00mL of a mixture consisting of 0.080 M H 2 A and 0.080 M HA − prefix="o" ns="urn:schemas-microsoft-com:office:office"? ?xml:namespace>
C.
5.00mL of a mixture consisting of two acids with the same K a , 0.080 M HA, and 0.16 M HB prefix="o" ns="urn:schemas-microsoft-com:office:office"? ?xml:namespace>
D.
5.00mL of a mixture consisting of two acids with thesame concentration (0.080 M), but different Ka
【单选题】A diprotic acid, H 2 A, has the following ionization constant: K a1 =1.1 × 10 -3 and K a2 =2.5 × 10 -6 ,To make up a buffer solution of pH 5.80 ,which combination would you choose?