Answer to Question #66604 in Physical Chemistry for murahi

Question

Question 7 : A Brønsted-Lowry base is defined as a substance that
decreases [H+] when placed in water.
acts as a proton donor.
increases [H+] when placed in water.
acts as a proton acceptor.

Question 8 : The magnitude of
K
w
Kw
indicates that __________.
water autoionizes very quickly
the autoionization of water is exothermic
water autoionizes very slowly
water autoionizes only to a very small extent

Question 9 : For the following reaction, which of the following is a conjugate acid-base pair?
H
C
2
O
−
4
(
a
q
)
HC2O4−(aq)
+
H
2
O
(
l
)
H2O(l)
→
→
H
3
O
+
H3O+
(aq) +
C
2
O
2
−
4
C2O42−
(aq)

H
2
O
H2O
and
C
2
O
4
2
−
C2O42−


H
C
2
O
−
4
HC2O4−
and
H
3
O
+
H3O+


H
C
2
O
−
4
HC2O4−
and
C
2
O
2
−
4
C2O42−


H
C
2
O
−
4
HC2O4−
and
H
2
O
H2O

Answer 1

Question 7: A Brønsted-Lowry base is defined as a substance that acts as a proton acceptor.
Question 8: The magnitude of Kw indicates that water autoionizes only to a very small extent.
Question 9: HC2O4− and C2O42−.