WorksheetsChemistry Home Work 4
Total questions: 25
Worksheet time: 19mins
Which one of the following is a diprotic acid?
sulfuric acid
phosphoric acid
chloric acid
nitric acid
hydrofluoric acid
The net ionic equation for formation of an aqueous solution of Al(NO3)3 via mixing solid Al(OH)3 and aqueous nitric acid is ________.
Al(OH)3 (s) + 3HNO3 (aq) → 3H2O (l) + Al(NO3)3 (aq)
Al(OH)3 (s) + 3NO3- (aq) → 3OH- (aq) + Al(NO3)3 (aq)
Al(OH)3 (s) + 3HNO3 (aq) → 3H2O (l) + Al3+ (aq) + NO3- (aq)
Al(OH)3 (s) + 3NO3- (aq) → 3OH- (aq) + Al(NO3)3 (s)
Al(OH)3 (s) + 3H+ (aq) → 3H2O (l) + Al3+ (aq)
What is the formula for phosphoric acid?
H3PO4
none of the above
H4PO4
H2PO4
H3PO3
What is the concentration (M) of KCl in a solution made by mixing 25.0 mL of 0.100 M KCl with 50.0 mL of 0.100 M KCl?
0.0333
0.100
0.0500
125
0.0250
Oxidation and ________ mean essentially the same thing.
reduction
decomposition
activity
corrosion
metathesis
Which hydroxides are weak bases?
CsOH
Ba(OH)2
KOH
RbOH
None of these choices are weak bases.
Which of the following is insoluble in water at 25 °C?
Ba(C2H3O2)2
Na2S
Ca(OH)2
Mg3(PO4)2
(NH4)2CO3
Of the species below, only ________ is not an electrolyte.
Rb2SO4
NaCl
HCl
Ar
KOH
Of the choices below, which would be the best for the lining of a tank intended for use in storage of hydrochloric acid?
tin
nickel
iron
zinc
copper
Of the species below, only ________ is not an electrolyte.
LiCl
KOH
Ne
NaNO3
HBr
Which of these metals will be oxidized by the ions of aluminum?
nickel
zinc
chromium
iron
magnesium
What volume (mL) of a concentrated solution of magnesium chloride (9.00 M) must be diluted to 350. mL to make a 2.75 M solution of magnesium chloride?
50.0
2.75
350
107
45.0
What is the concentration (M) of CH3OH in a solution prepared by dissolving 34.4 g of CH3OH in sufficient water to give exactly 230 mL of solution?
4.67
0.00159
1.59
5.31
11.9
Oxidation cannot occur without ________.
air
water
oxygen
reduction
acid
How many grams of NaOH (MW = 40.0) are there in 200.0 mL of a 0.175 M NaOH solution?
114
.00219
14.0
0.0350
1.40
With which of the following will the ammonium ion form an insoluble salt?
sulfate and carbonate
chloride
carbonate
none of the above
sulfate
Which of the following reactions will not occur as written?
Mg (s) + Ca(OH)2 (aq) → Ca (s) + Mg(OH)2 (aq)
Sn (s) + 2AgNO3 (aq) → 2Ag (s) + Sn(NO3)2 (aq)
Co (s) + 2AgCl (aq) → 2Ag (s) + CoCl2 (aq)
Co (s) + 2HI (aq) → H2 (g) + CoI2 (aq)
Zn (s) + Pb(NO3)2 (aq) → Pb (s) + Zn(NO3)2 (aq)
Sodium does not occur in nature as Na (s) because ________.
it reacts with water with great difficulty
it is easily replaced by silver in its ores
it is easily reduced to Na-
it undergoes a disproportionation reaction to Na- and Na+
it is easily oxidized to Na+
What volume (mL) of a concentrated solution of sodium hydroxide (6.00 M) must be diluted to 200.0 mL to make a 0.880 M solution of sodium hydroxide?
2.64
26.4
50.0
176
29.3
Oxidation is the ________ and reduction is the ________.
gain of electrons, loss of electrons
loss of electrons, gain of electrons
gain of oxygen, loss of mass
loss of oxygen, gain of electrons
gain of oxygen, loss of electrons
Based on the activity series, which one of the reactions below will occur?
Fe (s) + ZnCl2 (aq) → FeCl2 (aq) + Zn (s)
Pb (s) + NiI2 (aq) → PbI2 (aq) + Ni (s)
SnBr2 (aq) + Cu (s) → CuBr2 (aq) + Sn (s)
Mn (s) + NiCl2 (aq) → MnCl2 (aq) + Ni (s)
None of the reactions will occur.
There are ________ mol of bromide ions in 0.500 L of a 0.350 M solution of AlBr3.
0.525
0.500
0.0500
0.167
0.150
How many grams of NaOH (MW = 40.0) are there in 500.0 mL of a 0.250 M NaOH solution?
114
0.00219
0.125
14.0
5.00
The compound NH4Cl is a weak acid.
True
False
Which one of the following is a correct expression for molarity?
μmol solute/L solution
mmol solute/mL solution
mol solute/kg solvent
mol solute/mL solvent
mol solute/L solvent
