grade 12 Chemistry review

If n=2, what is l and ml respectively?

The oxidation number of N in (NH4)3PO4 (ammonium phosphate) is:

The pH at the equivalence point of a titration of a weak acid with a strong base will approximately be

Which one of the following is a redox reaction?

What is the hybridization of a carbon in ethene?

How many carbons are there in 3-ethylpentane?

In the following chemical reaction the oxidizing agent is 1. 5H2O2 + 2MnO4 – + 6H+ → 2Mn2+ + 8H2O + 5O2

Is cyclopentanol a primary secondary or tertiary alcohol?

The air pollutant NO is produced in automobile engines from the high temperature reaction: N2 (g) + O2 (g) D 2NO(g) Keq = 1.7 x 10-3 at 2300K. If the initial concentration of N2 (g) and O2 (g) at 2300K are both 1.40M, what is the concent

Identify the reducing agent in the following chemical reaction. Cd + NiO2 + 2H2O → Cd(OH)2 + Ni(OH)2

How can you convert but-2-yne to (2Z)-but-2-ene

What is the specific heat capacity of zinc if it requires 146 J to raise the temperature of 15 grams of zinc by 25°C?

Cyclopropane undergoes rearrangement to form propene, C3H6. If cyclopropane disappears at a rate of 0.50 mol/ Ls, at what rate is propene being pduced?ro

What is the correct electronic configuration of Copper?

Calculate the [H+] in a solution that is 0.18 M in NaF and 0.25 M in HF. (Ka = 7.2 × 10–4)

What is the VSEPR shape of AsH3

The oxidation number of Fe in K3Fe(CN)6 is:

What is the pH of a solution made of 0.50 M acetic acid and 0.200 sodium acetate given the Ka of acetic acid is 1.8 x 10-5?

Which of the following would you expect to have the highest boiling point? ethanol, ethyl ethanoate, ethanoic acid, ethane, ethene, ethyne, ethanal or chloroethane?

State the condensed electron configuration of b. S^2- (sulfur anion)

How many carbons are there in methyl butanoate

When an electron falls to a lower energy level it:

. Calculate E°cell for the following reaction: 2Fe2+ (aq) + Cd2+ (aq) à 2Fe3+ (aq) + Cd(s)

name an isomer of 2-methylpropane

Identify the following atom from the electron configurations. Y : 1s22s22p63s23p64s23d104p65s24d105p1

For the reaction: Ag+ (aq) + Cl-(aq) <--> AgCl(s) ΔH = -127kJ/mol In which direction does the equilibrium shift as a result of adding NaCl?

Using the following thermochemical data: 2Y(s) + 6HF(g) → 2YF3(s) + 3H2(g) ΔH° = –1811.0 kJ/mol 2Y(s) + 6HCl(g) → 2YCl3(s) + 3H2(g) ΔH° = –1446.2 kJ/mol calculate ΔH° for the following reaction: YF3(s) + 3HCl(g) → YCl3(s) + 3HF(g)

If you have a negative entropy and a positive enthalpy, what can the Gibb's free energy be?

Identify the following atom or ion from the electron configurations. Y - : 1s22s22p63s23p64s23d104p65s24d105p6

Given the equilibrium: AgBr(s) <--> Ag+ (aq) + Br-(aq) Ksp = 3.3 x 10-13 If [Br-(aq)] = 0.50 mol/L, what is [Ag+ (aq)]?

What is the major product when 2-methylprop-1-ene is treated with HBr at room temperature?

For nitrous acid, HNO2, Ka = 4.0 × 10–4. Calculate the pH of 0.54 M HNO2.

Which of the following is NOT a strong base? 1. Be(OH)2 c. NaOH 2. Li2O d. CaO

What is the name of this compound?

For the reaction: 2HI (g) <--> H2 (g) + I2 (g). If the Ksp is 0.020 and the Qsp is 0.34, the reaction will proceed which direction?:

What VSEPR molecular shape do you expect for IF4 +?

Calculate the [H+] in a solution that has a pH of 9.48.