emenems
Badges: 1
Rep:
?
#1
Report Thread starter 6 years ago
#1
hi, someone please help with these questions, I'm not quite sure what to do!
34.5g of sodium was reacted with titanium chloride to produce some titanium metal.:
TiCL4 + 4Na --> Ti + 4NaCl
a) How many moles of sodium were reacted?
b) How many moles of titanium chloride would have reacted with the sodium?
c) What mass of titanium would have been produced?
d) What mass of titanium would have been produced if 34.5 tonnes of sodium had been reacted instead?

I think the answer for a is 1.5 moles, as the Ar of Na= 23g, so 34.5/23=1.5
0
reply
lerjj
Badges: 12
Rep:
?
#2
Report 6 years ago
#2
(Original post by emenems)
hi, someone please help with these questions, I'm not quite sure what to do!
34.5g of sodium was reacted with titanium chloride to produce some titanium metal.:
TiCL4 + 4Na --> Ti + 4NaCl
a) How many moles of sodium were reacted?
b) How many moles of titanium chloride would have reacted with the sodium?
c) What mass of titanium would have been produced?
d) What mass of titanium would have been produced if 34.5 tonnes of sodium had been reacted instead?

I think the answer for a is 1.5 moles, as the Ar of Na= 23g, so 34.5/23=1.5
Are you stuck on the rest of them? a) is correct. What does it mean when it says

a+4b-->

in an equation? I.e. what do the big numbers refer to? That should answer part (b)
0
reply
emenems
Badges: 1
Rep:
?
#3
Report Thread starter 6 years ago
#3
(Original post by lerjj)
Are you stuck on the rest of them? a) is correct. What does it mean when it says

a+4b-->

in an equation? I.e. what do the big numbers refer to? That should answer part (b)
Well the big numbers balance the equation, and to balance that equation I think it must already be balanced, so
TiCl4 = 190g
4Na= 92g
4NaCl = 234g
Ti= 48g
190+92= 282g
234+48=282g
so would it just be one mole of titanium chloride? or am i completely barking up the wrong tree
0
reply
lerjj
Badges: 12
Rep:
?
#4
Report 6 years ago
#4
(Original post by emenems)
Well the big numbers balance the equation, and to balance that equation I think it must already be balanced, so
TiCl4 = 190g
4Na= 92g
4NaCl = 234g
Ti= 48g
190+92= 282g
234+48=282g
so would it just be one mole of titanium chloride? or am i completely barking up the wrong tree
The equation is already balanced, yes. The big numbers do have an actual meaning, they're not literally just there to make the two sides even (although given what they mean, they have to make it balance because otherwise conservation of mass goes out the window).

Spoiler:
Show
2a+3b--> means either: 2 molecules of a react with three molecules of b OR 2 moles of a react with 3 moles of b
0
reply
emenems
Badges: 1
Rep:
?
#5
Report Thread starter 6 years ago
#5
(Original post by lerjj)
The equation is already balanced, yes. The big numbers do have an actual meaning, they're not literally just there to make the two sides even (although given what they mean, they have to make it balance because otherwise conservation of mass goes out the window).

Spoiler:
Show
2a+3b--> means either: 2 molecules of a react with three molecules of b OR 2 moles of a react with 3 moles of b
Ok, i think I understand now, thanks
0
reply
X

Quick Reply

Attached files
Write a reply...
Reply
new posts
Back
to top
Latest
My Feed

See more of what you like on
The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

Personalise

Current uni students - are you thinking of dropping out of university?

Yes, I'm seriously considering dropping out (150)
14.75%
I'm not sure (44)
4.33%
No, I'm going to stick it out for now (304)
29.89%
I have already dropped out (26)
2.56%
I'm not a current university student (493)
48.48%

Watched Threads

View All
Latest
My Feed

See more of what you like on
The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

Personalise