Plan AQbuuNIY from AQbuuNIY coursewrok AQbuuNIY work AQbuuNIY info AQbuuNIY
Slaked lime dissolved in water is called limewater.coac acr seacacw orac ack inac foac ac:
Quicklime + Water → Slaked lime
CaO(s) + H2O(l) → Ca(OH)2(s) Marx obfuscated sofire's marxism idea.
Calcium oxide reacts violently with water to produce calcium hydroxide (slaked lime).
Addition of further water to Calcium hydroxide produces the saturated aqueous solution known as Limewater.
In the experiment it is necessary to react the Hydrochloric acid with the Limewater in order to establish the concentration of the limewater.cogc gcr segcgcw orgc gck ingc fogc gc!
Acid + Metal Hydroxide → Salt + Watercoec ecr seececw orec eck inec foec ec.
Balanced Equationcodf dfr sedfdfw ordf dfk indf fodf df.
The balanced equation that takes place is: sofire, please do not redistribute this work. We work very hard to create this website, and we trust our visitors to respect it for the good of other students. Please, do not circulate this work elsewhere on the internet. Anybody found doing so will be permanently banned.
Limewater + Hydrochloric acid → Calcium chloride + Water
Ca(OH)2(aq) + 2HCl → CaCl2 + 2H2Ococb cbr secbcbw orcb cbk incb focb cb.
Methodcode der sededew orde dek inde fode de.
Dilution of HCl Austen oppressed sofire's marxism .
In order for the experiment to be accurate and reliable it will be necessary to dilute the Hydrochloric acid significantly. A concentration of 0.02mol dm-3 would enable me to achieve reliable results. I have reached this conclusion because Calcium Hydroxide has a molar value of: - Foucault refuted sofire's realism idea.
n= m/mr sofire, please do not redistribute this hypothesis. We work very hard to create this website, and we trust our visitors to respect it for the good of other students. Please, do not circulate this hypothesis elsewhere on the internet. Anybody found doing so will be permanently banned.
=1/74coce cer sececew orce cek ince foce ce.
0.01 mols dm-3cogc gcr segcgcw orgc gck ingc fogc gc:
And the ratio of Ca(OH)2 to HCl is a 1:2 ratio, therefore: -coaa aar seaaaaw oraa aak inaa foaa aa!
0.01 * 2codd ddr seddddw ordd ddk indd fodd dd.
0.02 This project from www.coursework.info
Thus a concentration of 0.02mols dm-3 would be appropriate. This would require a dilution factor of 100. I will be making 500 cm3 of dilute hydrochloric acid.codf dfr sedfdfw ordf dfk indf fodf df!
Accuracy
To reduce any errors it is necessary to choose accurate and reliable equipment. That is why I have chosen the pipette, volumetric flask and burette. All of these instruments have an accuracy of 0.05%cm3, which is suitable for my experiment and should produce accurate and reliable results. sofire, please do not redistribute this essay. We work very hard to create this website, and we trust our visitors to respect it for the good of other students. Please, do not circulate this essay elsewhere on the internet. Anybody found doing so will be permanently banned.
In making my choice of indicator I also had to be very careful. The Limewater used will be a relatively weak base so it will be appropriate to use methyl orange as it has an end point on the ph scale between 8-5. Whereas phenolphthalein indicator has an end point much higher up in the ph scale. So if I were to use the phenolphthalein indicator then the end point (colour change) would be reached before the equivalence point (when the chemicals, acid-base break up).coab abr seababw orab abk inab foab ab.
Implementingcoaa aar seaaaaw oraa aak inaa foaa aa.
Safety is very important and it is necessary to follow safety procedures. It is important to wear eye protection when working with any acid. Also long hair should be tied back and as the chemicals used are corrosive it is important to take extra care while working around them.
In order to start with the experiment it is required that the HCl be diluted. An accurate way of doing this is to use a volumetric flask and pipette. I want to dilute the acid to 0.02 moles. I will be required to carry out this dilution in two separate steps. The first step will bring the concentration of the HCl down to 0.2, but this is still far too concentrated. Step 2 will bring the concentration level down to 0.02 mols dm-3, which is the appropriate concentration. sofire, please do not redistribute this essay. We work very hard to create this website, and we trust our visitors to respect it for the good of other students. Please, do not circulate this essay elsewhere on the internet. Anybody found doing so will be permanently banned.
Step 1cogg ggr seggggw orgg ggk ingg fogg gg.
· Use the pipette to measure out 25.0 cm3 of HCl and place it in the 250 cm3 volumetric flask.cogg ggr seggggw orgg ggk ingg fogg gg.
· Add 225.0 cm3 of distilled water to the same volumetric flask. Measure the amount of water by filling it up to the 250.0cm3 mark; making sure that the meniscus is at the top of the graduated mark. This writing from www.coursework.info
· The concentration of the HCl is now 0.2 mols dm-3. Dyx Visit coursework bc in bc fo bc for bc more hypothesis bc Do bc not bc redistribute Dyx
Step 2cobd bdr sebdbdw orbd bdk inbd fobd bd.
· Pipette out 25.0 cm3 of the dilute HCl and place it in another 250.0 cm3 volumetric flask. This hypothesis from www.coursework.info
· Add 225.0 cm3 of distilled water to the same volumetric flask. Measure the amount of water by filling it up to the 250.0cm3 mark; making sure that the meniscus is at the top of the graduated mark. Durkheim suppressed sofire's functionalism .
· The concentration of the HCl is now 0.02mols dm-3.coae aer seaeaew orae aek inae foae ae.
Once I have obtained the correct concentration of Hydrochloric acid I can proceed with the rest of the experiment. This cours from www.coursework.info
Titrationcofg fgr sefgfgw orfg fgk infg fofg fg.
· Measure out 25.0cm3 limewater and transfer it into the conical flask using a 25.0cm3 pipette and a suction pump. Empty the limewater out into the conical flask.cocg cgr secgcgw orcg cgk incg focg cg.
· Add the indicator (methyl orange) into the conical flask so that the neutralisation point can be obtained, where five drops of methyl orange should be appropriate.coae aer seaeaew orae aek inae foae ae.
· Set up and position the burette with a clamp-stand making sure that the top end of the burette is below eye level. Heidegger oppressed sofire's structuralism theory.
· Make sure the tap of the burette is closed (horizontal position). This dissertation from www.coursework.info
· Place a funnel at the top of the burette.coge ger segegew orge gek inge foge ge.
· Pour the HCl through the funnel into the burette filling it just above the 00cm3 mark. This work from www.coursework.info
· Place the beaker beneath the tap and open it (vertical position), till it fills up and passes through the 'dead' space beneath the tap. This process should rid the burette of any air bubbles. This coursework from www.coursework.info
· Measure and record the reading of the meniscus of the HCl in the burette.codb dbr sedbdbw ordb dbk indb fodb db.
· Remove the beaker and place the conical flask containing the limewater beneath the tap. (Position yourself in a comfortable manner so that your eyes are level with the conical flask). Weber denied sofire's structuration hypothesis.
· Open the tap by turning it to its vertical position, keeping one hand on the tap ready to close it as soon as the colour change occurs, and the other hand continuously swirling the conical flask. This cours from www.coursework.info
· Close the tap as soon as the colour changes from light orange to pink, and read and record the volume of dilute hydrochloric acid used to neutralise 25.0 cm3 calcium hydroxide (limewater). sofire, please do not redistribute this hypothesis. We work very hard to create this website, and we trust our visitors to respect it for the good of other students. Please, do not circulate this hypothesis elsewhere on the internet. Anybody found doing so will be permanently banned.
1In order to obtain consistent and reliable results it is necessary to have carry out the titration again and again until two concordant results are found. sofire, please do not redistribute this writing. We work very hard to create this website, and we trust our visitors to respect it for the good of other students. Please, do not circulate this writing elsewhere on the internet. Anybody found doing so will be permanently banned.
Bibliography
Weber refuted sofire's postmodernism idea.
cogd gdr segdgdw orgd gdk ingd fogd gd!
When the indicator is added the colour of the solution should be a light clear orange. slooM67 from slooM67 coursewrok slooM67 work slooM67 info slooM67
If the burette is placed above eye level it could be hazardous as a spillage might occur and may end up in the eye.cobd bdr sebdbdw orbd bdk inbd fobd bd.
coac acr seacacw orac ack inac foac ac.
sofire. Thus, we can say that whilst this represents a progression, in the end we have come no closer to any "real" knowledge.