Homework Help: Quick Question not sure if im understanding what this question is asking

1. Oct 6, 2006

cheechnchong

Limiting Reactant Question..A Little help needed

Consider equation:
Ga2S3(g) + 6H2O (l) ---- 2Ga(OH)2 (s) + 3H2S (g)

Assume that 35.0g of Ga2S3 and 13.0g H2O are allowed to react...
(a) determine limiting reagent! --- FIGURED THIS OUT (it's H2O)
(b) calculate mass of hydrogen sulfide (do i use limiting reagent?)
(c) calculate mass of gallium hydroxide (do i use limiting reagent here too?)

just quick yes and no answers will help me out...thanks!

Last edited: Oct 6, 2006
2. Oct 6, 2006

cheechnchong

hahha i need this in a few hours...

3. Oct 6, 2006

4. Oct 6, 2006

lkh1986

Yeap, the limiting reagent is H20, and all calculations onwards will base on the limiting reagent.

5. Oct 6, 2006

cheechnchong

hey thanks a lot God bless! sorry for the multiple posts on this thread haha

6. Oct 6, 2006

Stevedye56

You'd use the limiting because thats the max that could be possibly produced. Its like saying you filled a 1000mL graudated cylinder with 5000mL if you used the excess reactant

7. Oct 6, 2006

cheechnchong

ahhh makes sense...good look

8. Oct 6, 2006

Stevedye56

Haha maybe ill try...

9. Oct 7, 2006

Staff: Mentor

I wonder how you could figure anything if the reaction is not balanced

10. Oct 7, 2006

cheechnchong

11. Oct 7, 2006

Stevedye56

You do realize hes talking to you, right?

12. Oct 7, 2006

cheechnchong

???????????

13. Oct 8, 2006