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12UK - Week 1 - Explore 2 - Writing Equations

Posljednje ažuriranje about 2 hours ago

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Pitanje 1

1.

Sodium thiosulfate (Na2S2O3) solution reacts with dilute hydrochloric acid to form a precipitate of sulfur, gaseous sulfur dioxide and a solution of sodium chloride.
•Write an equation, including state symbols, for this reaction.

Pitanje 2

2.

• Solutions of ammonium sulfate and sodium hydroxide are warmed together to form sodium sulfate solution, water and ammonia gas.
•Write the simplest ionic equation for this reaction
•Can you explain what this ionic equation means in a sentence or two?

Pitanje 3

3.

•Write full and ionic equations for the reaction between magnesium chloride and silver nitrate solution.

Pitanje 4

4.

•Write full and ionic equations for the reaction between copper sulfate and sodium hydroxide solution.

Pitanje 5

5.

•Write full and ionic equations for the reaction between potassium hydroxide and copper sulfate solutions.

Pitanje 6

6.

Balance the following equations:
•Don’t forget the state symbols!
• Ca + O2 -> CaO
• Mg + HCl -> MgCl2 + H2
• CO + O2 -> CO2
• CH4 + O2 -> CO2 + H2O
• CuCO3 -> CuO + CO2
• KClO3 -> KCl + O2

Pitanje 7

7.

Balance the following:
• Fe + H2O -> Fe3O4 + H2
• NH3 + O2 -> NO + H2O
• C4H8 + O2 -> CO2 + H2O
• Al + Cl2 -> AlCl3
• H2O2 -> H2O + O2

Pitanje 8

8.

Balance the following:
• PbCO3 + HNO3 -> Pb(NO3)2 + H2O + CO2
• H3PO4 + Mg -> Mg3(PO4)2 + H2
• Pb3O4 + HNO3 -> Pb(NO3)2 + PbO2 + H2
• Na2CO3 + HCl -> NaCl + CO2+ H2O
• NH3 + O2 -> NO + H2O