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| 1 | |
Which of the following compounds is a strong electrolyte? |
| | A) | HNO3 |
| | B) | HNO2 |
| | C) | NH3 |
| | D) | H2O |
| | E) | HF |
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| 2 | |
Which of the following compounds is soluble in water? |
| | A) | BaSO4 |
| | B) | Cu2O |
| | C) | AgBr |
| | D) | NaClO3 |
| | E) | Hg2Cl2 |
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| 3 | |
In accordance with the solubility rules, which of the following is true when solutions of KCl(aq) and AgNO3(aq) are mixed? |
| | A) | No precipitate will form. |
| | B) | KAg2+ will precipitate and Cl- and NO3- will be spectator ions. |
| | C) | KNO3 will precipitate and Ag+ and Cl- will be spectator ions. |
| | D) | ClNO3 will precipitate and K+ and Ag+ will be spectator ions. |
| | E) | AgCl will precipitate and K+ and NO3- will be spectator ions. |
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| 4 | |
When aqueous solutions of FeCl2 and AgNO3 are mixed, which of the following equations is balanced and correctly represents the resulting reaction? |
| | A) | FeCl2(aq) + AgNO3(aq) → Fe(s) + AgNO3(aq) + Cl2(g) |
| | B) | FeCl2(aq) + AgNO3(aq) → Fe(NO3)2(aq) + 2AgCl(s) |
| | C) | FeCl2(aq) + 2AgNO3(aq) → Fe(NO3)2(aq) + 2AgCl(s) |
| | D) | FeCl2(aq) + AgNO3(aq) → Fe(NO3)2(aq) + AgCl(s) |
| | E) | FeCl2(aq) + 2AgNO3(aq) → Fe(NO3)2(aq) + AgCl(s) |
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| 5 | |
When barium nitrate and sodium phosphate are mixed together in water a precipitate is formed. The most likely chemical formula for the precipitate is: |
| | A) | Ba3(PO4)2 |
| | B) | Na3PO4 |
| | C) | Ba(NO3)2 |
| | D) | BaPO4 |
| | E) | NaNO3 |
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| 6 | |
Which of the following is the correct net ionic equation for the reaction that occurs when aqueous solutions of Pb(ClO3)2 and Na2SO4 are mixed? |
| | A) | ClO3-(aq) + Na+(aq) → NaClO3(s) |
| | B) | Pb2+(aq) + SO42-(aq) → PbSO4(s) |
| | C) | Pb(ClO3)2(aq) + Na2SO4(aq) → PbSO4(s) + NaClO3(aq) |
| | D) | Pb2+(aq) + 2ClO3-(aq) + 2Na+(aq) + SO42-(aq) → PbSO4(s) + 2Na+(aq) + SO42-(aq) |
| | E) | none of the above |
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| 7 | |
Identify all of the products formed when Ba(OH)2(aq) reacts with HNO3(aq). |
| | A) | Ba(NO3)2(aq) and H2O(l) |
| | B) | BaN2(s) and H2O(l) |
| | C) | Ba2+(aq), NO2-(aq) and H2O(l) |
| | D) | Ba(s), H2(g) and NO2(g) |
| | E) | Ba(NO3)2(s) and H2O(l) |
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| 8 | |
If 22.5 mL of 0.383 M HCl are required to completely neutralize 20.0 mL of
a KOH solution, what is the molarity of the KOH solution? |
| | A) | 0.340 M |
| | B) | 0.383 M |
| | C) | 0.431 M |
| | D) | 2.32 M |
| | E) | 2.94 M |
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| 9 | |
During a titration the following data were collected. A 20.0 mL portion of solution of an unknown acid HX was titrated with 2.0 M KOH. It required 60.0 mL of the base to neutralize the sample. What is the molarity of the acid HX? |
| | A) | 6.0 M |
| | B) | 0.67 M |
| | C) | 3.0 M |
| | D) | 0.12 M |
| | E) | none of the above |
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| 10 | |
In the reaction of 30 ml of 0.15 M HCl with 35 ml of 0.10 M NaOH, which of the following statements best describes the resulting solution? |
| | A) | The acid has been neutralized. |
| | B) | Another 5 ml of acid must be added to neutralize the solution. |
| | C) | Another 5 ml of base must be added to neutralize the solution. |
| | D) | The solution is basic. |
| | E) | The solution is acidic. |
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| 11 | |
In the equation shown below, which species, if any, is the reducing agent?
Equation: Cr2O72- + 2OH- → 2CrO42- + H2O |
| | A) | Cr2O72- |
| | B) | OH- |
| | C) | CrO42- |
| | D) | H2O |
| | E) | None of them, since it is not an oxidation reduction reaction. |
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| 12 | |
Of the first atoms in each of the following formulas, which one has the highest oxidation number? |
| | A) | CO32- |
| | B) | NO3- |
| | C) | SO3 |
| | D) | ClO3- |
| | E) | P2O5 |
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| 13 | |
Which, if any, of the following is not a redox reaction? |
| | A) | CO32- + HSO4-→ HCO3- + SO42- |
| | B) | 2Al(s) + 3H2SO4(aq) → 3H2(g) + Al2(SO4)3(aq) |
| | C) | 2H2O → 2H2 + O2 |
| | D) | 2NaI + Br2 → 2NaBr + I2 |
| | E) | All of them are redox reactions. |
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| 14 | |
What are the coefficients in front of C2H6O and C2H4O when the equation given below is balanced? The reaction occurs in aqueous acid.
Equation: C2H6O + Cr2O72- + H+ → C2H4O + H2O + Cr3+ |
| | A) | 1, 1 |
| | B) | 2, 2 |
| | C) | 2, 3 |
| | D) | 3, 3 |
| | E) | 6, 6 |
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| 15 | |
What are the expected products when solid MgCO3 is heated? |
| | A) | Mg and CO2 |
| | B) | Mg2C and O2 |
| | C) | MgO and CO2 |
| | D) | MgCO and O2 |
| | E) | MgCO2 and O |
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