Question

which of the following statements is/are true: statement 1: when the stopcock on the buret is vertical, it is in the open position statement 2: first wash the buret with di water, then fill it entirely with solution statement 3: the buret is read bottom to top, and measures the liquid dispensed select one: only statement 2 only statement 1 statements 1 & 2 all the statements are true statements 1 & 3

Explanation:

• Statement 1: In a buret, when the stop - cock is vertical, the liquid can flow through, so it is open.
• Statement 2: After washing a buret with de - ionized (DI) water, it should be rinsed with the solution to be used (not just filled entirely) to avoid dilution errors.
• Statement 3: Burets are read from bottom to top and measure the volume of liquid dispensed.

Answer:

Statements 1 & 3