Oquizy

In an experiment to investigate how temperature affects the rate of reaction, which is the independent variable?

Temperature of solution Time measured Type of acid used Volume of gas produced

What conclusion can you draw?

A contains a mixture A is pure B has three substances Solvent didn't work

What is the Rf value?

0.40 0.60 1.67 6.00

Which of the following suggests a pure substance?

Boils at different temperatures each trial Changes colour before boiling Melts over a wide range Melts sharply at a fixed temperature

What is happening during the first horizontal section?

The substance is boiling The substance is cooling The substance is melting The thermometer is faulty

Two substances (X and Y) were tested in the same solvent. Rf of X = 0.25, Rf of Y = 0.85. Which conclusion is correct?

X is less soluble in this solvent X is more soluble Y is less soluble Y remained at the baseline

Quiz: Chemistry - Experimental Chemistry