Consider the following TLC plate and the measurements provided. Calculate the Rf

Question

Consider the following TLC plate and the measurements provided. Calculate the Rf value for the unknown, and select the correct response. Select one: If an indication of the buffer capacity of a 0.010M buffer is measured as 20 drops af added acid, Predict how many drops of acid could be added to the buffer if it had a concentration of 0.100M? Select one: Complete the following phrase: An acid + base produces Select one: a weak acid and its conjugate base a salt + water a solution with high PH buffer solution If 20.00 mL. of stock k solution with concentration of 50.00 mgL-1 is diluted to 100.00 mL, the solution will have a concentration of Select one: 10.00 mg per L 25.00 mg per L 5.00 mg per L 20.00 mg per L The nitrite ion represented as NO2- NO3 2- NO2 2- NO3-

Explanation / Answer

Rf of unknown, or U = 34 / 54 = 0.63

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