HSC Chemistry questions (1 Viewer)

[Leyfae]

Did anyone else get the sodium acetate question? I got that it came from sodium hydroxide and acetic acid

The second part should be the ph was around 8 cause of acetic acid reaction no one in my class seemed to get it though

 

[Leyfae]

NaOH +CH3COOH ---> NaCOOH + CH3OH

 

[kawaiipotato]

Is this the one about adding NaOH in small amounts?
I wrote that the acetic acid and sodium acetate formed a buffer solution whi ch resists changes in pH. Then I said something like adding small amounts of NaOH will cause the pH to increase slightly, but by LCP, it will use up H+ ions which will cause it to shift to produce more H+ so countering the small pH change
Not sure if fully correct though

 

[turntaker]

I forgot what acetate was..!!

 

[nancylime]

it's a buffer and resists change due to this equilibrium