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Learn how to balance chemical reactions and identify different types including combinations, decompositions, single and double replacements, and combustions with examples. Explore rules for predicting products and complete equations effortlessly.
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Warm Up Balance the following reactions: • __NaCl + __BeF2 --> __NaF + __BeCl2 2. __FeCl3 + __Be3(PO4)2 --> __BeCl2 + __FePO4
Warm Up Balance the following reactions: • _2_NaCl + __BeF2 --> _2_NaF + __BeCl2 2. 2_FeCl3 + _Be3(PO4)2 --> _3BeCl2 + _2FePO4
Combination Reactions A + B AB Examples: S + O2 SO2 CaO + H2O → Ca(OH)2
Decomposition Reactions AB A + B Examples 2H2O(I) → 2H2 + O2 2Cl2O5 (g) → 2Cl2 (g) + 5O2 (g)
Single Replacement Reaction A + BC → AC + B Example: Cu + 2AgNO3 → 2Ag + Cu(NO3)2 Br2 + 2KI → 2KBr + I2
Double Replacement Reactions AX + BY → BX + AY Example: HCl (aq) + NaOH (aq) → NaCl (aq) + H2O (l)
Combustion Reaction • An element or compound reacts with an oxidizing element, such as oxygen. • Probable products are CO2 and H2O Examples: CH4 + 2 O2 → CO2 + 2 H2O + energy 2 H2 + O2 → 2 H2O(g) + heat
Rules for Predicting Products • R+ S RS • RS R + S • T + RS TS + R • R+S- + T+U- R+U- + T+S- • CxHy + (x+y/4) O2 x CO2 + (y/2) H2O
Reminder Make sure that you look at what might be formed and consider its state when predicting products • Metals will form solids on their own and be ions in combination with nonmetals Mg compared to MgCl2 • Don’t forget that some non-metals will be anions in combination with metals, but covalent diatomic gasses when they are on their “own” Cl2 compared to HCl
Complete the following equations: Decomposition • NCl3 Single Replacement • Al + CuSO4 • Mg + HCl Double Replacement • Ba(NO3)2 + Na2SO4 *** Hint Nitrogen and Chlorine are diatomic gasses on their own ** *** Hint: Look at the ions you are working with!!!***
Complete the following equations: Decomposition • NCl3 N2 + Cl2 Single Replacement • Al + CuSO4 • Mg + HCl Double Replacement • Ba(NO3)2 + Na2SO4
Complete the following equations: Decomposition • NCl3 N2 + Cl2 Single Replacement • Al + CuSO4 Al2(SO4)3 + Cu • Mg + HCl Double Replacement • Ba(NO3)2 + Na2SO4
Complete the following equations: Decomposition • NCl3 N2 + Cl2 Single Replacement • Al + CuSO4 Al2(SO4)3 + Cu • Mg + HCl H2 + MgCl2 Double Replacement • Ba(NO3)2 + Na2SO4
Complete the following equations: Decomposition • NCl3 N2 + Cl2 Single Replacement • Al + CuSO4 Al2(SO4)3 + Cu • Mg + HCl H2 + MgCl2 Double Replacement • Ba(NO3)2 + Na2SO4 BaSO4 + NaNO3
The End Start Working on HW if time permits