Chapter 4 - Types of chemical reactions

Question 1

What is a solute?

Answer 1

a substance in a minor quantity, changes its physical state wen dissolved

Question 2

What is a solvent?

Answer 2

a substance in major quantity

Question 3

What is an aqueous solution?

Answer 3

when water is used as the solvent to dissolve solutes

Question 4

Why is water a good solvent ?

Answer 4

because ionic compounds dissociate very strongly. Solvent solute interactions are stronger than solute-solute interactions

Question 5

what is a strong electrolyte?

Answer 5

dissociates completely in what er and good conductor

Question 6

What is a weak electrolyte?

Answer 6

dissociates partially, poor electrical conduction

Question 7

What is a non-Electrolyte?

Answer 7

does not dissociate, does not conduct

Question 8

How can you determine the ions concentration from knowing the molarity?

Answer 8

write out the chemical equation of dissociation

relate molarity to the solution using stoic.

Question 9

What is a precipitation reaction?

Answer 9

produces a solid (insoluble) compounds when two or more aqueous solution of ionic compounds are mixed

Question 10

What are the rules of solubility

Answer 10

1. Nitrate slats are soluble
2. salt containing alkali metal are solubles and ammonium are soluble \
3. chloride, bromide and iodide salts are soluble (exception contain ag, pb,hg)
4. sulfate salts are soluble, (exceptions: baso4, pbs04, hgso4,caso4)
5. hydroxide salts are not soluble (exceptions, NaOH, KOH)
6. sulfide, carbonate, chromate and phosphate salts re not soluble.