how many molecules are in 1 moles of carbon monoxide .what will it's mass be
determine how many electron/s are lost or gained in the half-reaction.
1. Al → Al3+
a. 2
b. 3
c. 4
d. 6
2. O2– → O2
a. 2
b. 3
c. 4
d. 6
3. SO32– → SO42–
a. 2
b. 3
c. 4
d. 6
4. PbO2 → Pb2+
a. 2
b. 3
c. 4
d. 6
1. Which of the following reaction is a reduction reaction?
a. Fe → Fe3+
b. Cr → Cr3+
c. MnO42– → MnO4–
d. Na+ → Na
2. Which of the following reaction is a reduction reaction?
a. Fe2+ → Fe3+
b. Sn2+ → Sn4+
c. Fe(CN)63– → Fe(CN)64–
d. Mn2+ → MnO4–
The chloride ion content of a 250.0-mL seawater sample was titrated against 0.1102 M silver nitrate, requiring 13.56 mL to reach end point.
What is the reaction for the titration analysis?
a. Ag⁺ + NO₃⁻ + Cl⁻ ⇌ Ag⁺ + NO₃⁻ + Cl⁻
b. AgCl + NO₃⁻ ⇌ AgNO₃ + Cl⁻
c. NO₃ + Cl ⇌ NO₃Cl
d. AgNO₃ + Cl⁻ ⇌ AgCl + NO₃⁻
How many moles of chloride ion is present in the sample? (2 points)
a. 1.494 × 10⁻³
b. 2.989 × 10⁻³
c. 7.472 × 10⁻⁴
What is the molarity of the chloride ion in the seawater sample? (2 points)
a. 5.976 × 10⁻³
b. 0.01196
c. 2.989 × 10⁻³
1. What is the solubility product expression for silver carbonate?
a. Ksp = [Ag⁺]² [CO₃²⁻]
b. Ksp = [Ag⁺] [CO₃²⁻]²
c. Ksp = 2 [Ag⁺] [CO₃²⁻]
d. Ksp = ½ [Ag⁺] [CO₃²⁻]
3. What is the molar solubility of the solution? (2 points)
a. 3.23 × 10⁻⁴
b. 2.24 × 10⁻³
c. 1.30 × 10⁻³
d. 1.28 × 10⁻⁴
5. Calculate the mass of silver carbonate that will dissolve in 150.0 mL of water. (2 points)
a. 0.0134 g
b. 0.0927 g
c. 5.29 × 10⁻³ g
d. 0.0538 g
1. What would be the solubility product constant (Ksp) equation for a theoretical compound X₃Y?
a. Ksp = 3 [X⁺] [Y³⁻]
b. Ksp = [X⁺]³ [Y³⁻]
c. Ksp = [X⁺] [Y³⁻]³
d. Ksp = ⅓ [X⁺] [Y³⁻]
2. What would be the solubility product constant (Ksp) equation for a theoretical compound XY₂?
a. Ksp = [X²⁺] ½ [Y⁻]
b. Ksp = [X²⁺] 2 [Y⁻]
c. Ksp = [X²⁺] [Y⁻]²
d. Ksp = [X²⁺] 2 [Y⁻]
3. What would be the solubility product constant (Ksp) equation for a theoretical compound X2Y3?
For Items 3 to 5, use the following reaction.
Fe(NO₃)₃ + NaOH → Fe(OH)₃ + NaNO₃
Which of the following are spectator ions?
a. Fe³⁺ and OH⁻
b. OH⁻ and NO₃⁻
c. Na⁺ and NO₃⁻
d. Na⁺ and OH⁻
Which of the following is the net reaction for the reaction above?
a. Fe(NO₃)₃ + NaOH → Fe(OH)₃ + NaNO₃
b. Fe³⁺ + OH⁻ → Fe(OH)₃
c. Na⁺ + NO₃⁻ → NaNO₃
d. Fe³⁺ + NO₃⁻ + Na⁺ + OH⁻ → Fe³⁺ + OH⁻ + Na⁺ + NO₃⁻
e. None, no precipitation reaction occured.
A container contains 2.5m 3 of Helium gas at 15 0 C and 98 Nm -2 pressures. What volume would this gas occupy at S.T.P?
The sides of a triangle measuring 40 m, 32 m, and 16 m increase at the rates of 2 m/s, 5 m/s, and 3 m/s, respectively. How fast is the area of the triangle changing?
a. 138.42 m^2/s
b. 113.69 m/s
c. 127.33 m^2/s
d. 113.69 m^2/s
Stronger the oxidizing agent, greater is the