WebOct 27, 2024 · If a phenolphthalein indicator has been added to the water, the sodium will leave a pink trail behind it as the metal sputters and reacts. The reaction is: 2 Na + 2 H 2 O → 2 Na + + 2 OH - + H 2 (g) The reaction is … WebThe flask contains 10.0 mL of HCl and a few drops of phenolphthalein indicator. The buret contains 0.320 M NaOH. It requires 31.5 mL of the NaOH solution to reach the end point of the titration. How many moles of HCl is neutralized by 31.5 mL of 0.320 M NaOH? A. 10.1 B. 0.01008 C. 10.08 D.0.0101 Please explain how to get the correct answer.
Activity Series - Alkali Metals in Water Department of …
Web1 day ago · Therefore, the carbonization depth obtained by the phenolphthalein titration method corresponds to the zone with a carbonization degree greater than 50% (pH-value less than 9.0) while the phenolphthalein titration method is difficult to identify the zone with a carbonization degree of 0%–50% (pH-value 9.0–11.5), which causes the carbonation ... WebFeb 28, 2024 · Phenolphthalein is an indicator, which detects whether a substance is an acid or a base. Materials Needed 200 mL beaker of water 10 - 12 drops of phenolphthalein 3 mL of lime water (saturated calcium hydroxide solution) straw Procedure Fill the beaker with 200 mL of water. Put 10 - 12 drops of phenolphthalein solution in the water. theodore kellogg
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WebJun 8, 2024 · The term p Alkalinity stands for “Phenolphthalein – Alkalinity”. It is the measurement of Hydroxide (OH –) and carbonate ion (CO 3-2) amount. It is determined by titrating a water sample with an acid of a known concentration in the presence of phenolphthalein as the indicator. WebPhenolphthalein: 0.1% dissolved in absolute ethyl alcohol (3) Standard sodium hydroxide solution ② Procedures Take 1.00 mL sample with precise pipet, and transfer it to a 250 mL narrow-neck flask; add 10 mL of absolute ethyl alcohol into the flask, and add three drops phenolphthalein indicator. WebA colour indicator-based assay was developed and validated for the quantitative analysis of Lisinopril in tablet in aqueous medium. The proposed procedure involved a reaction between the acidic functional group (COOH) of Lisinopril drug and theodore ketterer