Acids and Alkalis Lab Report Essay Example for Free

Acids and Alkalis Lab Report EssayAn acid is a group of chemicals. Acids are positively charged ions, they are silver and are solutions of pure compounds in water. If you want to know if something is an acid, you can test it by using litmus paper. Acids lead turn litmus paper red, whilst alkalis will turn it blue. Alkalis are negatively charged ions and are usually solid. AimTo find out how much of different acids is needed to neutralize 25mls of sodium hydroxide solution (NaOH). HypothesisThe strongest alkali will need the smallest amount of an acid to cancel out and the weakest will need more acid. Variables Control Independent bloodsucking The indicator, NaOH H2SO4 HClHNO3 The chemical reaction between the acids and alkali. Materials / Apparatus * H2SO4 * HCL * HNO3 * Alkali (NaOH) * Stand * Burette * Beaker * Funnel * Bunsen Burner * Crucible * Phenolphyalein Method 1. Pour the 25 ml of NaOH into a beaker. 2. Drop three drops of phenolphyalein into the beaker. 3. The sol ution will now turn pink. . Through a funnel, pour the acid into the burette.Start dripping a few drops hotshot by angiotensin-converting enzyme into the beaker. 6. The solution will start getting a lighter shade of pink. 7. Stir the beaker around. 8. Once the solution turns clear, stop adding more acid. 9. get the amount of acid used. 10. Take the solution and pour a bit of it into a crucible. 11. Light the Bunsen burner. 12. The brininess solution will turn into salt crystals when it is heating planted. NaOH + HCl = NaCl + H2O NaOH + HNO3 = NaNO3 NaOH + H2SO4 = Na2SO4 + 2H2O ObservationsAlkali Acid Moles Observation NaOH HCL 1 Mole Took 4 ml to neutralize. No further experiment was made. NaOH HCL 0. 1 Mole Took 31 ml to neutralize. 2. 30 minutes until pink salt crystals were formed. NaOH HNO3 1 Mole Took 19. 2 ml to neutralize. 2 minutes until good white salt crystals were formed. NaOH H2SO4 2 Moles Took 1. 1 ml to neutralize. 2. 15 minutes until rings of white salt were formed. Analysis The weakest acid (HCl 0. 1 Mole) needed the most alkali to be made into salt and the strongest (H2SO4 2 Moles) needed the least.Different experiments made different salts. Conclusion The strongest acid will black market faster and you will need less. This is because it is a lot more reactive than the weaker acids and it will want to react much faster with the alkali. Evaluation In my group, Zuzanna and I were the ones doing the experiment while everyone else observed and took notes on what happened. The first time, we dropped one too many drops of H2SO4 in the alkali so the alkali quickly turned pink again.We had to try it six times before we could get it unspoilt because we kept putting too much in or we would forget how much we put in. But after a few tries we finally got it to work and we got the correct solution. Therefore we could finally go on to the next step and heat up the solution. It took our salt around 2 minutes and 15 seconds to heat up, evaporate a nd leave us with small rings of white salt crystals. Our salt crystals did not turn out as the best, but they were successful.