Question

anyone from connexus have answers to chemistry 10B unit 2 test plzz im behind need help!

Answer 1

Directly ask the question

Answer 2

Acids taste
a. Sweet
b. Sour
c. Bitter
d. Salty

Answer 3

its b i.e sour

Answer 4

thankss

Answer 5

What is an Arrhenius base?
a. A chemical compound that produces H+ in solution
b. A chemical compounds that produces OH- in solution
c. A chemical compound that reacts with H+ in solution
d. A chemical compound that reacts with OH+ in solution

Answer 6

can anyone help plzz

Answer 7

In the reaction HF + H2O  H3O+ + F- , the acid-conjugate base pair is
a. HF and H3O+
b. HF and F-
c. H2O and HF
d. H2O and F-

Answer 8

arrheneus base produc OH- ion in solution.

Answer 9

so its b

Answer 10

HF and F-
because HF is acid that can gice H. and F- is conjugate base because it can accept proton.

Answer 11

yes b.
sorry i said a ..... :(

Answer 12

thts ok, so b for both of them

Answer 13

yes

Answer 14

A Brnsted-Lowry acid is
a. An electron-pair acceptor
b. An electron-pair donor
c. A proton (H+) acceptor
d. A proton (H+) donor

Answer 15

d.

Answer 16

As the concentration of H+ increases
a. The pH decreases
b. The pH increases
c. The pOH decreases
d. Has no effect

Answer 17

a. pH decreases because pH= - log [H+]

Answer 18

oh, i get it now

Answer 19

is there any more questions????

Answer 20

Which expression represents the pH of a solution?
a. log [H+]
b. –log [H+]
c. log [OH-]
d. – log [OH-],,
17. so this one would be B.,

Answer 21

yes b

Answer 22

ok i have one more.
If [H+] = 1.7 x 10-3 M, what is the pH of the solution?
a. 1.81
b. 2.13
c. 2.42
d. 2.77

Answer 23

put this value in the equation at H+
pH = -log[H+]
pH = -log [ 1.7 X 10 ^-3]
pH=
1st calculate your self...

Answer 24

would it be c.

Answer 25

do it man its simple..............

Answer 26

2.77

Answer 27

do u have scientific calculator????

Answer 28

sorry my Cp is really slow, and no i dnt have the right calculator

Answer 29

What is the pH of a neutral solution at 250C?
a. 0
b. 1
c. 7
d. 14

Answer 30

neutral solution always have pH of 7

Answer 31

the zero is supposed to be a degrees sign

Answer 32

yes

Answer 33

small zero on the upper side of C is called degree

Answer 34

thnxx a lot!

Answer 35

welcome :)