• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Titration is used in neutralisation reactions:

Extracts from this document...


ANALYSING Titration is used in neutralisation reactions: However, this method is also used to find the morality of acids and alkaline. In this investigation I have used titration to find out how much acid (HCl) is needed to neutralise the alkali (Lithium hydroxide-LiOH), thereafter using this number to find the relative atomic mass of lithium. The relative atomic mass of a substance varies from substance to substance. This number is used so that the masses of atoms, of elements could be compared. The symbol used is (Ar). A mole is the mass of a substance that has the same number of atoms as there are in 12g of carbon 12. The number of atoms in one mole is known as "Avogadro's constant", and has a value of 6.02 x 10��mol �. Procedure (1): I will assume that (1) mole of gas occupies 24000cm� at room temperature and pressure. ...read more.


was accurate as the relative atomic mass found is similar to the average mass shown on the periodic table, 6.9. It is important that my answer lies between the range of 6.9 and 7.9 otherwise it will bare the relative atomic mass of another element. I have written my answers to (2) decimal places initially as some calculation gave me answers such as (0.0) when I wrote them to (1) decimal place. This means that they would have been mathematically incorrect. However my final relative atomic mass of lithium has been written to (1) decimal place, as the measuring cylinder that I used did not have accurate intervals. I have used the complete numbers in my calculations so that my final results will be to a high degree of accuracy. ...read more.


* The number of moles of LiOH present in 100cm� of the solution: In procedure (1) I used 25 cm� of the solution; this indicates that I will have to multiply my answer above by (4) to reach 100cm�. = 0.0315667 x 4 = 0.1262667 mol = 0.13 mol (2dp) * Using these values and the original mass of lithium the relative atomic mass is: Relative Atomic Mass = Mass / Moles of lithium = 0.10 / 0.1262667 = 7.91974648 = 7.92 (2dp) In this procedure all my answers have been written to (2) decimal places as the equipment I used was more accurate and had a higher degree of accuracy. From these results I can draw the conclusion that lithium has a relative atomic mass of 7.8 and 7.9. Although the periodic table suggests that lithium has a relative at9omic mass of 6.9 I believe that different masses of lithium will have a difference in relative atomic mass. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Classifying Materials section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related GCSE Classifying Materials essays

  1. The role of mass customization and postponement in global logistics

    Mass Customization, the production of unique products at a mass produced cost, sounds like a contradiction, but by using the new interactive mediums it's now possible to meet the individual needs of customers in a mass market and make superior profits.

  2. Free essay

    Periodic table

    Summarise the results Calculating Sex Each human has 2 pairs of chromosomes, 22 of these are autosomes and the other one is the sex chromosome. Females have two X chromosomes and males have a X and Y chromosome. Different animals have different sex chromosomes e.g.

  1. The relative atomic mass of lithium

    to deal with spillages Immediate clearing of spillages of any kind, wet or dry * any splashes into the eye must be washed out continuously for 10-15 minutes Before starting an experiment, it is essential to ensure that all chemicals not involved in the work have been removed from the

  2. Determination of the relative atomic mass of lithium

    Remove the top of the flask, add the lithium and close it as quickly as possible to avoid H2 gas escaping. 4. The after that collect the gas and just record the final volumes of hydrogen using Method 2: procedure for Titration 1.

  1. Determining the relative atomic mass of lithium.

    The concentration (c) is a measure of how much solute there is dissolved in a solvent. It is measured in moles per unit volume. The unit of volume used could be dm�, cm� or ml. It is important to know that 1 ml of a substance equals 1 cm�.

  2. Determination of the relative atomic mass of Lithium.

    mols hydrogen gas Deduce the number of moles of lithium used- This balanced equation shows us what ratio of mols of lithium will produce the 0.010 mols of hydrogen: 2Li (s) + 2H 0 (l) 2LiOH (aq) + H (g)

  1. Determination of the relative atomic mass of Lithium.

    * Titrate with 0.100 mol dm� HCl(aq). * Record your results in an appropriate format. * Repeat the titration to obtain consistent results. Show all of your results. * Record average titre. Results - LiOH (aq) + HCl (aq) LiCl (aq)

  2. Redox reactions and the halogens.

    O -2 (except in peroxides and compounds with fluorine) E.g. the oxidation number of Sulphur in Na2S is -2, but in sulphur dioxide, SO2, it is +4. A substance which increases the oxidation number of an element is an oxidizing agent and vice versa a reducing agent.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work