chemistry 1c

[mennakhaled]

the question about the solubility lead,silver,zinc the answers pls?
and the answers of calculations problems
also why hydrochloric acid not used for acidifying ?
urgently needed pls

 

[mennakhaled]

Replay pls:s

 

[alex]

1. silver more soluble in zinc than lead
m.p. of zinc and silver is 530
boiling point of zinc is below silver

2. 1.2 tonnes if i'm not mistaken

3. Hydrochloric acid is not used because it'd react with silver nitrate to give a white ppt

 

[mennakhaled]

iam amazing lol!
thanks so much

 

[omermuhammad]

in no.3 i wrote hydrochloric acid will reat with the solution to form precipitate........so will i get marks for this

 

[omermuhammad]

i wrote hydrochloric a cid will react with SOLUTION to for precipitate....so will i get marks

 

[mennakhaled]

i think yes, i wrote it reacts with silver nitrate and also wrote a stupid part it is concentrated lol i dunno how i wrote it i think we will get marks for the first part

 

[schoolation]

They don't penalise, they build up marks, so they will ignore any wrong parts unless it's WRONG CHEMISTRY!

 

[adi19956]

in no.3 i wrote hydrochloric acid will reat with the solution to form precipitate........so will i get marks for this

probably

 

[omermuhammad]

in the first question which asked for the precaution and reason.....what did you guys get

 

[schoolation]

It was really easy, Eye goggles, to protect eye in the case of water splashing

 

[mennakhaled]

goggles if the water while heating splashed out

 

[schoolation]

^ Nice work

 

[alex]

i put heat proof gloves in case someone touches the container while it's hot, or the flame

 

[omermuhammad]

i wrote....."use holder to handle the evaporating basin as it may be hot and cause his hand to burn"

 

[mennakhaled]

what about x in the end of the exam =7?

 

[schoolation]

Yes

 

[alex]

what about x in the end of the exam =7?

yup

 

[schoolation]

Why the CaO reacts with SiO2?

 

[mennakhaled]

to form slang to remove impurites