Question

2. Calculate the Rr value if the distance traveled by spot is given as 0.017em and the distance traveled by solvent front is given as Scm. (5pts.) oublimation is frontal colid phase tú gas phase.wo paring through liquid phase (b) The sublimation of naphthalene was performed in a purification experiment. At the beginning of the technique, 6.9g of impure naphthalene was obtained. After the purification technique was complete, 4.7g of naphthalene was recovered. Calculate the percent of naphthalene that was recovered. (5pts.) x 100= 4.7 to ag Ma of naphthalene (CH) is dissolved in 20g of benzene. The freezing point of pure ming point of the mixture is 2.8. What is the molal freezing

Answer 1

2) Rf value = distance travelled by spot/distance travelled by solvent

= 0.017/8 = 0.002125

3)a) Sublimation is the process of conversion of solid into gas.

b) % of recovery

= mass of naphthalene recovered×100/impure mass

= 4.7×100/6.9

= 68.12