pH with the formula c=n/v

[omni]

how i find the pH of 5.525 gr HClO that melted in 100 ml solution?

i just know i have 1 mol HClO, so how i keep from here?


thanks.

[Borek]

Not melted but dissolved.

This is a weak acid, you have to take into account its dissociation constant. Google ICE tables.

[omni]

thank you.

can you tell me if i correct i got question that says:find the pH of solution that it volume 50ml and it made by dissolved 0.012gr LiOH. i found that v=0.05L n=0.0005mol,C=0.01
i am not sure if the pH is 13 or 10

thanks

[Borek]

Neither. Show what you did.

[omni]

ok so how i told i found that v=0.05L n=0.0005mol,C=0.01

so i know that the concentration of hydroxide ions is 10^-1

and i know that the OH- is 1 so if i use the formula poh+ph=14 and i know that the poh is 1 so the pH must be 13 yes?

maybe my way is not 100% correct so i would like if you can show me the correct way.

thank you

[Borek]

If c=0.01 why do you think concentration of OH- is 10-1?

[omni]

because the concentration of hydroxide ions =C and c=0.01

now i need to find the hydronium concentration

if i wrong can you show me the correct way?


(in my calculation the result of c,n,v i correct?)


thank you again.

[Borek]

0.01 is not 10-1.

What does it mean 10-1?

[omni]

oh sorry is 10^-2 well is mean Hydronium Ion Concentration or hydroxide ions concentration but now i am not sure.

if i found the c=0.01 so is not =hydroxide ions concentration (we speak here about base solution)
yes?

[Borek]

You are on the right track now, LiOH is a strong base, so you can assume it is fully dissociated.

[omni]

HI thank you , i Success to solve the problem.