10.0 moles of water are consumed in 5.0 s in a reaction. What is the rate of consumption?
2.0 mol/s of water
100
Write the Ksp equation for CdS(s)
C2+ * S2-
100
What is the definition of a bronsted-lowry base
Bases are proton acceptors
100
What is the oxidation number of oxygen
2- or 1- (for hydrogen peroxide)
100
The chemical symbol for sodium
What is Na?
200
Draw a potential energy diagram of an endothermic reaction with an activation energy of 10 kJ
positive heat enthalpy difference between reactants and activated complex is 10
200
Does a precipitate form when silver nitrate and potassium bromide react? If so what is the precipitate?
silver bromide
200
What is the pH of a substance with a hydronium concentration of 1.0 x 10-3
3
200
What is reduced in the formation reaction of iron (II) oxide?
oxygen
200
What is the atomic mass of nitrogen?
What is 14?
300
In an exothermic reaction when the temperature decreases does it shift to the left or right of the equation?
Shifts to the right
300
Daily Double
Draw the WHMIS symbol for a corrosive material
hand having acid pour on it from a test tube
300
What is conjugate base of HCO3-
CO3 2-
300
What is the oxidation number of Br2
0
300
What does WHMIS stand for?
Workplace Hazardous Material Information System
400
If the Keq is greater than one which way does the equilibrium lie and what is favoured the reactants or products?
Lies to the right and favours the products
400
What is the molar solubility of iron (II) oxide if the ksp is 4.9 x 10-17
2.3 x 10-6 M
400
Write the chemical equation of ammonia reacting with water and water acts as an acid.
H2O + NH3 ----> OH- + NH4+
400
What is the oxidation number of Mn in KMnO4?
7+
400
What materials do you need to bring for your test?
Data booklet, Pencil/Pen, CALCULATOR
500
What is the Keq expression for the following reaction:
N2(g) + 3H2(g) <----> 2NH3(g)
ammonia/nitrogen squared * hydrogen cubed
500
What does it mean if a substance is precipitated our of solution?
Ions react to form a solid substance in solution
500
What information do you need to collect to be able to calculate the concentration of an an unknown strong acid?
The volume of strong base needed to neutralize a specific amount of the acid and the bases concentration. As well as the mole ratio between acid and base.
500
If something is reduced it means it is the oxidizing or reducing agent?