Chemistry, 17.11.2020 20:50, lilsmitty137ovf7yw

A piece of magnesium was added to 100 cm3 of an aqueous acid. The time taken for the metal to react completely was measured. This experiment was repeated using different aqueous acids. The same volume of acid was used in each experiment and the pieces of magnesium used were identical. In one experiment the reaction was carried out at a different temperature. Explain the following in terms of collision rate between reacting particles. (i) Why is the rate in experiment C slower than the rate in experiment A?

[2] (ii) Why is the rate in experiment B faster than the rate in experiment A?

[2] (iii) Why is the rate in experiment D faster than the rate in experiment A?

[3] d) The soluble salt hydrated lithium sulfate is made by titration from the soluble base lithium hydroxide.
The sulfuric acid is added slowly from the burette until the indicator just changes colour. The volume of sulfuric acid needed to just neutralise the lithium hydroxide is noted. Describe how you would continue the experiment to obtain pure dry crystals of hydrated lithium sulfate.

[5]
Guys plz help me I want it now

Answers: 2

Show answers

Other questions on the subject: Chemistry

Chemistry, 22.06.2019 02:30, bionicboy03120440

What is the mass of sodium in 3 moles of sodium chloride

Answers: 1

continue

Chemistry, 22.06.2019 03:30, acaciacoats

The atomic radius of sodium is 186 pm and of chlorine is 100 pm. the ionic radius for na+ is 102 pm and for cl– is 181 pm. in going from na to cl in period 3, why does the atomic radius decrease while the ionic radius increases? a. the inner electrons in the sodium cation shield its valence electrons more effectively than the inner electrons in the chloride anion do. b. the inner electrons shield the valence electrons more effectively in the chlorine atom than in the chloride anion. c. the outermost electrons in chloride experience a smaller effective nuclear charge than those in the sodium cation do. d. the outermost electrons in chloride experience a larger effective nuclear charge than those in the sodium cation do. e. monatomic ions are bigger than the atoms from which they are formed.

Answers: 2

continue

Chemistry, 22.06.2019 06:00, ehhshsh

Calculate the mass of silver needed to react with chlorine to produce 126g if silver chloride?

Answers: 3

continue

Chemistry, 22.06.2019 12:30, kaliyab191

Sodium sulfate dissolves as follows: na2so4(s) → 2na+(aq) + so42- (aq). how many moles of na2so4 are required to make 1.0 l of solution in which the na concentration is 0.10 m?

Answers: 2

continue

Do you know the correct answer?

A piece of magnesium was added to 100 cm3 of an aqueous acid. The time taken for the metal to react...