100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Previously searched by you
Previously searched by you
logo
Summary Grade 12 IEB Physical Science - Stoichiometry Essentials CA$8.05   Add to cart
Quickly navigate to
Preview
  2.  
  3. 12th Grade
  4.  
  5. Physical Sciences

Summary

Summary Grade 12 IEB Physical Science - Stoichiometry Essentials
 5 views  0 purchase
  • Course
  • Physical Sciences
  • Institution
  • 12th Grade

This detailed Grade 12 IEB Physical Science summary covers stoichiometry fundamentals, including calculations for mass-mass, mass-volume, and volume-volume reactions. It explains mole ratios, limiting reactants, and percentage yield with examples, making it ideal for students needing a clear resour...

[Show more]

Preview 2 out of 6  pages

Document information

  • November 1, 2024
  • 6
  • 2021/2022
  • Summary

Subjects

  • chem

Written for

  • 12th Grade
  • Physical Sciences
  • 200
All documents for this subject (633)

Seller

avatar-seller
TanyaChigs

Reviews received

Content preview

T M




consider :
2H (g)>
+
019) -
2H20 (e)



balanced to
must be obey law of conservation of mass the , balancing numbers

mole ratios between reactants and products
represent
-




H2 O2 H2O numbers referred to stoichiometric
(balancing
:
1 2
.
·




as

2 mol I mol 2 mol Coefficients)
-
used in
calculations


1 . Mass-mass calculations



calculate the mass of produced 29
example
oxygen when
4g of potassium
:
,




Chlorate decomposes completely according to the
following balanced
equation .


2k(10g(s) -
> 2k((is) + 30 19) ,




Step 1 Convert the mass to moles (n
given
:




M 39 35 5 3(16) mol
122
59
= + + = .




,
,




n
= =24
Step 2 : use mole ratio between KCIOs Cused) and Oz (formed)

KCLO3 :
Oz
2 mol :
3 mol
1 mol : 1 5 my
.




0 , 24mol :
1, 5 x 0, 24 =
0, 36 mol



Step 3 Calculate
:

the unknown
quantity (mass
o produced

02 M 2(16) mol
32g
: = =
.




M 32x0, 36 11 ,
529
m =
n .
= =

, . Mass-volume
2 calculations


25g of calcium carbonate reacts with excess dilute hydrochloric
example completely
:




balanced equation What
add
according
to the
following volume of carbon
.




dioxide collected at STP gas

CaCOz(s) +
2H(((aq)
-


>
CaCk(aq) + Hc0(1) + CO,
(g)

Step 1 Convert mass to moles (n)
given
:




+
M 40 3(16) mol
12
100g
= + + =
.




n
== =
0, 25



Step 2 : use mole ratio between CaCO3 Cused) and CO2produced


CaCO3 :
CO2
Ima : I mol
0 25 : 0, 25
,




Step 3 : Calculate the unknown
quantity (volume of CO2 produced
V nVm .
=
0 25. x 22 4 =
,
5 6 dm
,




. volume-volume
3 calculations


calculate the volume of
oxygen required
example : to convert 300dms of sulphur
sulphur trioxide at STP .
dioxide completely into



250 - (9) +
02(g) -

250319)

1 Convert volume
Step given to moles (n)
:




n = = = 13 , 393mo



Step 2 : use mole ratio between So, and 02


SO2 :
02
zmal : I mal

13 , 393 : 6 , 697



Step 3 Calculate the unknown
quantity (volume of O2 produced
:




V nVm
.
=
6, 697x22 4 =
150 01am ,
,

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller TanyaChigs. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for CA$8.05. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

75323 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
CA$8.05
  • (0)
  Add to cart