Question

Please help me with these two. I have no idea. multiple choice!

Answer 1

1) the equal concentrations of H+ and OH- ions only occurs once, in neutral water.

2) if pH = -log(H+), then pOH = -log(OH-). Plug and solve

Answer 2

so it would be 7 for #1

Answer 3

yes neutral is around pH 7 :D

Answer 4

what does -log stand for?

Answer 5

the logarithm function, on a calculator

Answer 6

negative logaritm?

Answer 7

it would be 1 x 10-2 (-log) ?

Answer 8

you need to know how your own calculator functions. the answer you get will depend on how your calculator interprets what you punch in. on mine, i type:\[-\log(1*10^{-2})\]

Answer 9

I get error

Answer 10

its 2 right?

Answer 11

first type -
then press the log button
probably this will appear -log(
then you type 1*10^-2 and then enter

you can also type 10E-2

Answer 12

the correct answer is 2, but you still need to know how your calculator functions

Answer 13

wow there is 1 zero too much in last post :P
its 1E-2 not 10E-2 xD

Answer 14

thanks both ! @thomaster & @JFraser