grade 12 Chemistry review | Baamboozle - Baamboozle

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How many electrons are transferred in the following reaction? Cd + 2HCl → CdCl2 + H2

4

1

3

2

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

Indium

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

specifically a Lindlar hydrogenation (converts to cis configuration)

Given the following reaction in acidic media: Fe2+ + Cr2O72– → Fe3+ + Cr3+ answer the following question: The coefficient for water in the balanced reaction is:

7

1

3

5

name an isomer of 2-methylpropane

butane

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

l = 0, 1; ml= -1, 0, +1

Which one of the following is a redox reaction? a) 2KBr(aq) + Pb(NO3 )2 (aq) → 2KNO3 (aq) + PbBr2 (s) b) 2Al(s) + 3H2SO4 (aq) → Al2 (SO4 )3 (aq) + 3H2 (g) c) CaBr2 (aq) + H2SO4 (aq) → CaSO4 (s) + 2HBr(g) d) H+ (aq) + OH– (aq) → H2O(l)

b) 2Al(s) + 3H2SO4 (aq) → Al2 (SO4 )3 (aq) + 3H2 (g)

How many electrons in an atom can have the quantum numbers n = 3, l = 2?

10

2

18

8

Which of the following would have the highest boiling point?

pentan-2-one

pentanamine

pentane

pentanal

Which type of alcohols are oxidized to produce carboxylic acids?

primary

tertiary

quaternary

secondary

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)]?

6.6 x 10^-13

For the reaction 2A + 4B→2C + 2D, at a particular instant in time, the rate of the reaction is 0.0352 M/s. What is the rate of change of B?

–0.141 M/s

0.141 M/s

–0.0352 M/s

0.0352 M/s

Find the rate equation:

Rate = k[A][B]2

Rate = k[A]2[B]2

Rate = k[A]3

Rate = k[A][B]

Is cyclopentanol a primary secondary or tertiary alcohol?

secondary alcohol ( 2 carbons attached to the adjacent carbon of alcohol)

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

only positive

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?

4.34

What is the name of this compound?

2-bromo-1,3-dimethylbenzene

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

-1.17V

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

ethanoic acid - has the most hydrogen bonding therefore it takes more ENERGY to break those intermolecular bonds. Therefore it should have highest boiling point

What is the correct electronic configuration of Copper?

[Ar]4s13d10

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

2-bromo-2-methylpropane

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?

to the right

Which of the following is NOT a strong base?

CaO

Li2O

NaOH

Be(OH)2

What is the VSEPR shape of AsH3

trigonal pyramidal (AX3E)

You are told that metal X is a better reducing agent than metal Y. This must mean that:

X+ is a better oxidizing agent than Y+.

X+ is a better reducing agent than Y+.

Y+ is a better oxidizing agent than X+.

Y is a better oxidizing agent than X.

What is the hybridization of a carbon in ethene?

sp2

Consider an electrochemical cell with a zinc electrode immersed in 1.0 M Zn2+ and a silver electrode immersed in 1.0 M Ag+.

-1.560 V

0.040 V

1.560 V

-0.040 V

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

Mn2+

MnO4 –

H2O2

O2

How many carbons are there in methyl butanoate

5

Consider the reaction X → Y + Z Which of the following is a possible rate law?

Rate = k[X][Y]

Rate = k[X]

Rate = k[Y]

Rate = k[Y][Z]

What VSEPR molecular shape do you expect for IF4 +?

seesaw

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

1.83

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

1.0 × 10–3 M

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

1.372 mol/L

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

+3

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

1.0 × 10–3 M

7.2 × 10–4 M

5.2 × 10–4 M

0.020 M

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

[Ne]3s^2 3p^6

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

Cd

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

Iodine anion

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

greater than 7.00

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?

0.39 J/g°C

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)

182.4 kJ/mol

What is the percent dissociation of HNO2 when 0.058 g of sodium nitrite is added to 110.0 mL of a 0.060 M HNO2 solution? Ka for HNO2 is 4.0 × 10–4.

5.2%

0.31%

8.2%

13%

When an electron falls to a lower energy level it:

Emits light

The following reaction occurs in basic solution: F2 + H2O → O2 + F– When the equation is balanced, the sum of the coefficients is:

12

13

11

10

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

rate of appearance = +0.50 mol/Ls

How many carbons are there in 3-ethylpentane?

7

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?:

Proceed to the left

When ignited, a uranium compound burns with a green flame. The wavelength of the light given off by this flame is greater than that of

microwaves

red light

radio waves

UV

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

-3

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

3.3 × 10–10 M