Chemistry

Mercury is poured into an aqueous solution of zinc nitrate.

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1) Mercury is poured into an aqueous solution of zinc nitrate.

  • a) Substitute symbols and formulas for words.
  • b) Predict the products. If no reaction occurs, write “NR” after the yields sign.
  • c) Include abbreviations for the physical state.
  • d) Balance the equation.

2) Balance the equation below after substituting symbols and formulas for words, remembering to include abbreviations for physical state. Iodine crystals react with chlorine gas to form solid iodine trichloride.

3) Balance the equation below and identify the type.

Cl2(g) + KBr(aq) —> KCl (aq) + Br2(l)

4) Balance the equation below and identify the type.

NH4NO2(s)—> N2(g) + H2O(l)

5) Balance the equation below after substituting symbols and formulas for words, remembering to include abbreviations for physical state. Solid sodium bicarbonate (NaHCO3) reacts with hydrochloric acid [HCl(aq)] to produce aqueous sodium chloride, water, and carbon dioxide gas.

6) In a chemical reaction, the Law of Conservation of Mass must be followed because

7) What is the general formula for a combustion reaction?

8) When sodium metal reacts with iron (II) chloride, iron metal and sodium chloride are formed. Write the balanced equation and classify it.

9) When dissolved sodium hydroxide reacts with hydrogen sulfate, aqueous sodium sulfate, water, and heat are formed. Write out the balanced equation for this reaction and indicate what the coefficients are from left to right.

10) When sodium chloride reacts with iron it forms sodium and iron (II) chloride. Write the balanced equation and classify it.

11) When fluorine is put into contact with calcium, calcium fluoride is created. Write the balanced equation and indicate the coefficients.

12) What type of reaction is the following: CH4+2O2 –>CO2 + 2H2O?

13) What type of reactions follows the formula AB + CD –> AD + CB?

14) In the equation 2H2 + O2 —> 2H2O, the reactant(s) is (are)

15) What type of reaction follows the formula A+ BC –>AC +B?

16) When fluorine gas is put into contact with calcium metal at high temperatures, calcium fluoride powder is created. Classify this reaction.

17) When calcium fluoride is heated it breaks down to fluorine and calcium. Write the balanced equation and classify it.

18) Use an activity series to determine whether or not the following reactants will react: Na+SnNO3

19) What is the symbol for a gas in a chemical equation?

20) When sodium reacts with iron (II) chloride, iron metal and sodium chloride are formed. What are the coefficients used in this reaction?

21) Determine whether or not the single replacement reaction will occur: Br2+NaCl

22) Which of the following statements is NOT true concerning what happens in all chemical reactions?

23) When calcium fluoride is heated it breaks down to fluorine and calcium. Write the balanced equation and indicate the coefficients.

24) When sodium sulfate and water react they form sodium hydroxide and hydrogen sulfate. Write the balanced equation and classify it.

25) Predict the products for this reaction: SnO + NaNO3 –>?

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