100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Summary A-Level/ Advanced higher chemistry - Stoichiometric Calculations $6.49   Add to cart

Summary

Summary A-Level/ Advanced higher chemistry - Stoichiometric Calculations

 12 views  0 purchase
  • Course
  • Institution

A-Level/ Advanced Higher Chemistry course notes. Concise notes summarising the topic of stoichiometric calculations. Notes are easy to follow and contain a summary of the topic with highlighted key-points and supportive examples where appropriate.

Preview 1 out of 2  pages

  • April 27, 2024
  • 2
  • 2020/2021
  • Summary
avatar-seller
STOICHIOMETRIC CALCULATIONS
Stoichiometry is the study of MOLE RELATIONSHIPS involved in chemical reactions


A BALANCED chemical equation is a STOICHIOMETRIC EQUATION It tells us the number of moles of
reactants and products in a chemical reaction obtained in IDEAL CONDITIONS


A QUANTITATIVE REACTION is one in which the substances REACT COMPLETELY according to the mole
ratios given by the balanced equation
The exact quantity of a substance in a given sample can be determined by carrying out a
quantitative reaction and using the stoichiometry of the reaction to determine the amount of
the substance


Two methods commonly used in quantitative analysis are GRAVIMETRIC and VOLUMETRICANALYSIS
ANALYTICAL TECHNIQUES

GRAVIMETRIC ANALYSIS VOLUMETRIC ANALYSIS
precipitation 4 acid base titrations
thermal analysis redox titrations
decomposition complexometric titrations
dehydration

Calculations Based on Volumetric and Gravimetric Analysis
In most calculations associated with volumetric and gravimetric analyses, it is sensible to change the
reacting quantities into moles. For substances in solution the formula used is: n cu
Where n = number of moles, C = concentration (mol l i ) and V = volume of solution (l).

For solids or pure substances where the mass has been measured, the formula used is: n mass
Where n = number of moles. GFM


the mass of a mole of any substance in grams g is equal to the gram formula
mass GEM and can be
calculated relative atomic masses
using

Calculations can be performed using the relationship between the mass and the number of
moles of a substance

For solutions the mass of solute grams or g the number of moles of solute moles
or not the volume of solution litres or 1 or the concentration of the solution
mots per litre or moll can be calculated from data provided

Percentage
by mass is the mass of solute made up to 100cm of solution
Percentage by volume is the number of cm of solute made up to 100cm
of solution

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 josephineshipp. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $6.49. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

78252 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
$6.49
  • (0)
  Add to cart