1 / 12

#42 The equation for the formation of water from its elements,

#42 The equation for the formation of water from its elements, H 2 (g) + O 2(g)  H 2 O (l) can be “balanced” by changing the formula of the product to H 2 O 2 . Explain why this is incorrect. To change the subscripts like that actually changes the product to a

norah
Download Presentation

#42 The equation for the formation of water from its elements,

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. #42 The equation for the formation of water from its elements, H2(g) + O2(g)  H2O(l) can be “balanced” by changing the formula of the product to H2O2. Explain why this is incorrect. To change the subscripts like that actually changes the product to a totally different one. You cannot touch the subscripts to “balance” the equation, only add coefficients.

  2. #43. Balance the following equations: 2 2 a. PbO2 PbO + O2 b. Fe(OH)3 Fe2O3 + H2O 2 3 c. (NH4)2CO3 NH3 + H2O + CO2 2 d. NaCl + H2SO4 Na2SO4 + HCl 2 2

  3. #44 What is a characteristic of every combination reaction? Every combination reaction has a single product. example: 2H2 + O2  2H2O single product

  4. #45 Write balanced chemical equations for the following combination reactions. a. Mg + O2 2 2MgO b. P + O2 diphosphorous pentoxide 4P + 5O2 2P2O5 c. Ca + S  CaS

  5. #46 What is a distinguishing feature of every decomposition reaction? a decomposition always has a single reactant. example: 2H2O  2H2 + O2

  6. #47 Write a balanced chemical equation for each decomposition reaction: Ag + O2 4 a. Ag2O(s)  2 b. ammonium nitrate dinitrogen monoxide + water NH4NO3  N2O + 2H2O

  7. #48 Use the activity series of metals to write a balanced equation for each single-replacement reaction. NO reaction. K is higher on the chart than Au a. Au(s) +KNO3 b. Zn(s) +AgNO3 2 Zn(NO3)2(s) +Ag 2 c. Al(s) +H2SO4  2 3 Al2(SO4)3 + H2 3

  8. #49 write a balanced equation for each of the following double- replacement reactions. a. H2C2O4(aq) +2KOH(aq) 2H2O +K2C2O4 b. CdBr2(aq) +Na2S(aq) CdS +2NaBr

  9. #50 What is common to all combustion reactions? oxygen on the left side example: C4H8 + 6O2 4CO2 + 4H2O

  10. #51 Write a balanced equation for the complete combustion of each compound. a. Butene (C4H8) C4H8 + 6O2 4CO2 + 4H2O b. acetone (C3H6O) C3H6O + 4O2 3CO2 + 3H2O

  11. #52 Balance each equation and identify its type. a. Hf + N2 Hf3N4 3 2 a combination reaction b. Mg + H2SO4 MgSO4 + H2 a single-replacement reaction c. C2H6 + O2 CO2 + H2O 2 7 4 6 a combustion

  12. #52 Balance each equation and identify its type. continued…. d. Pb(NO3)2 + NaI  PbI2 + NaNO3 2 2 a double-replacement reaction e. Fe + O2 Fe2O3 4 3 2 a combination reaction

More Related