Question

the ph of 10^-8M HCl is
A less than 7
B 8
C greater than 7
D 7

Answer 1

less , HCL ph is always less than 7 cuz its acid

Answer 2

one more
the concentration of OH^- is 1 x 10^-10 the solution is
A acidic
B neutral
C basic
D none of the above

Answer 3

@ikram002p @thomaster

Answer 4

will , is the OH in water solution ?
if yes then the concentration dnt matter OH is always basic
so i cant juge according to the concentration only
i need to know what is the solute

Answer 5

solute is not given in the question
that's y i have a doubt

Answer 6

@ikram002p

Answer 7

@Jack1

Answer 8

humm then sry i cant help :O
but i think im lost btw
C ( usually water ) and D ( cuz its not given extra info )

Answer 9

the answer given is acidic
@Preetha @theEric

Answer 10

can u help me jack?

Answer 11

hey?

Answer 12

been a while since i did chem, but think this is correct:
acid is a hydrogen donor
base is a hydrogen acceptor
so OH is ...hydroxide? and should therefore be a base... but this is OH^-... so dont recall

and what is the standard ph of water? (i think it's pretty close to 7, so maybe it doesnt affect the outcome
also: a concentration of 1x 10^(-10) is that strong or weak?

Answer 13

so overall i would have thought "basic"

Answer 14

according to lewis theory
acid:which accets a share of e
base : donates a share of e

Answer 15

@Jack1

Answer 16

@Preetha @sarah786 @random231

Answer 17

You have been given some incorrect information.
\[\text{K}_w = [\text{H}^{1+}][\text{OH}^{1-}]\]
\[\text{If} ~ \text{K}_w = 1.0 \times 10^{-14}\]
\[[\text{OH}^{1-}] = \frac{\text{K}_w}{[\text{H}^{1+}]}\text{and} ~[\text{H}^{1+}] = \frac{\text{K}_w}{[\text{OH}^{1-}]}\\ \text{pH} = - \log [\text{H}^{1+}]\]
See if you can take it from here.

Answer 18

@ghuczek is right. You must follow his steps.
(Some of us misread your 2nd question, because it looked like the first one)