Please just put the letters In a conductimetric titration, what happens at the e
ID: 537391 • Letter: P
Question
Please just put the letters In a conductimetric titration, what happens at the equivalence point? a. Conductivity reaches the minimum. b. Conductivity reaches the maximum. c. Some amount of barium hydroxide does not react with the acid. d. The precipitation of Barium Chloride occurs. In the experiment, 'Pressure-temperature relationship in gases', which data pairs were collected? a. Pressure and volume b. Temperature and volume c. Temperature and pressure d. None of the above Which of the following sentence is true regarding the retention/retardation factor, R_f? a. It is the ratio of distance travelled by solvent to the distance travelled by solute. b. The value of R_f always lies in between 1 and -1. c. It is constant for a solute and solvent system at a constant temperature. d. None of the above. Ascorbic acid is added to complex dissolved _____ and _____ which would otherwise interfere with the determination of Aluminium. a. Gold and manganese b. Silver and manganese c. Iron and manganese d. Sodium and iron What is the chemical name of NO^-_2? a. Nitrogen dioxide b. Nitrite ion c. Nitrate ion d. Nitrogen dioxide ion What is the recommended cut off level of Aluminium (III) in drinking water? a. 1 times 10^-1 mg L b. 1 times 10^-2 mg L^-1 c. 1 times 10^-1 mg L^-1 d. 1 times 10^1 mg L^-1
Explanation / Answer
1. c
Some amount of Ba(OH)2 does not react with the acid
2. c
Temperature and pressure
3. a
Retardation factor is the ratio of the distance travelled by the solvent to the distance travelled by the solute
4. c
Iron and Manganese
5. b
Nitrite ion