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Solve any chemical reaction with Symbolab's free online calculator. Get step-by-step solutions, graphs and explanations.
Example #1. How to figure out the right (or product side): (1) Identify the type of compound decomposing: NaClO 3 is a chlorate. Notice that you have to be able to "read" a formula and identifiy the parts (cation and anion) that make it up. (2) Apply the rule for that type: chlorates decompose to the binary salt and oxygen gas.
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- Using Inspection/Trial and Error
- Using Linear Systems of Equations
- Combining Inspection + Linear Systems
- Frequently Asked Questions About Balancing Chemical Equations
Example #1 (Trivial): CaCO3 + HCl
1. Iron + Hydrogen Chloride = Ferrous Chloride + Hydrogen Gas: Fe + HCl → FeCl2 + H2 2. Zinc + Hydrogen Chloride = Zinc Chloride + Hydrogen Gas: Zn + HCl → ZnCl2 + H2 1. CaO + H2O → Ca(OH)2
Example #2 (Simple): Na + H2O
1. Combustion of Methane and Oxygen: CH4 + O2 = CO2 + H2O
Practice Balancing Chemical Equations Using Inspection
1. Aluminium + Sodium Hydroxide + Water = Sodium Aluminate + Hydrogen Gas: Al + NaOH + H2O = NaAlO2 + H2 2. Zinc + Hydrogen Chloride = Zinc Chloride + H2 Gas: Zn + HCl → ZnCl2 + H2
Example: Balance KMnO4 + HCl Using The Algebraic Method
1. a = ¹/₄ f 2. b = 2 f 3. c = ¹/₄ f 4. d = ¹/₄ f 5. e = ⁵/₈ f 6. f∈ R 1. a= 2 2. b= 16 3. c= 2 4. d= 2 5. e= 5 6. f= 8
Practice Balancing Chemical Equations Using Linear Systems
1. K4Fe(CN)6 + H2SO4 + H2O = K2SO4 + FeSO4 + (NH4)2SO4 + CO
Identify elements which occur in one compound on each side. This is very common (e.g. K, Mn, O and H in the prior example).Start with the one among those which has a big index (this will help to keep working with integers), and assign a variable, such as a. In the prior example, O has the largest index (4)Next, start determining other coefficients in terms of a: H2O has to be 4a (because of O), MnCl2 has to be 1a (because of Mn), and KCl has to be 1a (because of K).This eliminates the first three eq...One can continue by writing the equations now (and having a simpler problem to solve) or, in this particular case you could notice that to balance the Hydrogens between HCl and 4a H2O, you need 8a...How do you write chemical equations?Why do chemical equations need to be balanced?How do you balance an equation with fractions?How do you identify the type of reaction based on the chemical equation?Example: Fe {3+} + I {-} = Fe {2+} + I2. Substitute immutable groups in chemical compounds to avoid ambiguity. For instance equation C6H5C2H5 + O2 = C6H5OH + CO2 + H2O will not be balanced, but PhC2H5 + O2 = PhOH + CO2 + H2O will. Compound states [like (s) (aq) or (g)] are not required.
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Examples. Cu (NO3)2 + Ag2O = CuO + AgNO3. CH3COCl + CH3CH2OH = CH3COOCH3CH2 + HCl. NaBr + AgI = NaI + AgBr. Na2HPO4 + Ca (OH)2 = Ca3 (PO4)2 + Na3PO4 + H2O. PH3 + KMnO4 + H2SO4 = Mn (H2PO4)2 + K2SO4 + MnSO4 + H2O. MgCO3 + K2SO4 = MgSO4 + K2CO3. NaNO2 + NaBr + H2SO4 = Br2 + NO + Na2SO4 + H2O. Cu (OH)2 + Mg (NO3)2 = Mg (OH)2 + Cu (NO3)2.
Jun 13, 2023 · Here are some examples: \[CaCO_{3}(s) \rightarrow CaO(s) + CO_{2}(g)\] \[2NaN_{3}(s) \rightarrow 2Na(s) + 3N_{2}g)\] \[2KClO_{3}(s) \rightarrow 2KCl(s) + 3O_{2}(g)\] \[Cu(OH)_{2}(s) \rightarrow CuO(s) + H_{2}O(g\; or\; l)\]
