level: Titrations
Questions and Answers List
level questions: Titrations
| Question | Answer |
|---|---|
| Describe the Required Practical: Carrying out a Titration | 1. Use a pipette to transfer 25cm^3 of sodium hydroxide solution into a conical flask 2. Add 5 drops of indicator such as methyl orange to the alkali in the conical flask 3. Place conical flask on white tile to see colour change more clearly 4. Fill burette with sulfuric acid 5. Add acid to alkali until solution is neutral. Once colour change begins, add acid drop by drop until solution is neutral. Swirl solution to ensure acid and alkali mix 6. Read volume of acid from burette (from bottom of meniscus) |
| What's the equation to calculate no. of moles? | No. of moles = concentration × volume |
| How do you calculate the concentration of a substance in g/dm3 using its concentration in mol/dm3 | Multiply the mol/dm3 by the rfm |