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Chemical Equations

Parent Category: Chemistry
A chemical equation is defined as the short-hand representation of a true chemical reaction with the help of symbols and formula. In this category, there are questions relating chemical equations, symbols and formula.


you have to know the conentrations fo at least two of your  compaunds or it is not posible to answere this.
This is a physical change, not a chemical one, but you can write an  equation.   CO2(g) --> CO2(l)   However, make sure you write the 2's as subscripts.
Formula, not equation. An equation describes a reaction, not a  chemical.    Lecithin is a mixture of a lot of different chemicals, mostly  phospholipids.
A chemical equation is a written symbolic representation of a  chemical reaction. The reactant chemical(s) are given on the  left-hand side and the product chemical(s) on the right-hand side.  The law of conservation of mass states that no atoms can be created  or destroyed in a chemical...
A chemical equation represents a reaction--a change of something from one state to another. For example, the burning of hydrogen to form water:2H2 + O2 => 2H2OA chemical formula represents a compound, such as H2O for water. However, muddy water is not a compound. It is water with a suspension of...
it must be cleared that while writing a chemical equation... it  must be in symbols of that element   then the numbers of the atoms used in the reaction must be equated  to both the sides that is it must be equal to right hand side as  well as left hand side... we need to remember the symbols...
It means that the reaction is reversible, such as that in the production of ammonia in the haber process
K2HPO4 + NaHCO3 --> K2NaPO4 + H2O + CO2   is the balanced equation for the reaction of dipotassium hydrogen  phosphate and sodium bicarbonate. (All numbers should be  subscripts).   Dipotassium phosphate does not exist. Tripotassium phosphate, K3PO4  does, but it's not acidic and...
Vinegar is acetic acid: CH3COOH Baking soda is sodium bicarbonate: NaHCO3 Mixing the two is simply and acid base reaction. CH3COOH + NaHCO3 ---> CH3COONa + H2CO3 That last product is carbonic acid which quickly decomposes into carbon dioxide and water: H2CO3 ---> H2O + CO2
A chemical equation tells you what substances are reacting, what  substances are produced and, in a balanced equation, provides the  coefficients to tell us in what ratio the substances react or are  produced.
2HCl + CaCO3 -> CO2 + H2O + CaCl2   You should probably refer to muriatic acid as hydrochloric acid, as  this is a much more well know name for it, and also the IUPAC name.
Since NaOH is easily water-soluble, complete dissociation will  occur, and you will only have ions. Adding manganese ions (in the  form of either manganese chloride or manganese nitrate) will give  you the net ionic equation Mn+2(aq) + 2OH-(aq) --> Mn(OH)2(s).
Due to the law of conservation of mass and matter, all particles  must have an equal number on both sides of a chemical equation. An  equal number of atoms of each element involved must be on each side  of the equation.
Law of conservation of mass is satisfied when  balancing chemical equations.    By the way, the conservation of (the kind and number of)  elements and charge is also satisfied. 
Yes, chemical equations describe chemical reactions. A chemical  equation tells you what substances are reacting, what substances  are produced and, in a balanced equation, provides the coefficients  to tell us in what ratio the substances react or are produced.
Sodium Carbonate is the disodium salt of the carbonate anion.  Sodium is a +1 cation while carbonate is a -2 anion. It is a basic  salt when dissolved in water. Sodium carbonate doesn't have a  equation itself, but when dissolved in water (deionization), it  looks like this:   Na2CO3(s) <-...
The general form is: "Reactants" ----> "Products" Therefore the  right hand side of the equation are the products. Any catalysts,  conditions, or reaction times may be listed over the arrow.
Balancing a chemical equation can often require a whole-number  coefficient placed in front of a chemical formula. This upholds the  Law of Conservation of Matter, which says that matter cannot be  created or destroyed. These coefficients must be in the lowest  possible ratio.
Because now is the most important method to describe a chemical  process.   In the future probable the mathematical modelling will be used.
Lithium fluoride has the chemical formula LiF. It is a common salt,  known as an alkali halide.
  If one knows the reactants, one can very simply obtain the products, the balance the equation from there.
Stoichiometry uses relationships between reactants and/or products  in a chemical reaction to determine desired quantitative data.
The net ionic equation for this process is: Ni(s) + Cu(+2)(aq)  --> Ni(+2)(aq) + Cu(s). This is an oxidation-reduction reaction,  where nickel is oxidized and copper is reduced.
BaCl2(aq) + Na2CO3(aq) --> 2NaCl(aq) + BaCO3(s). Or, the net  ionic: Ba(+2)(aq) + CO3(-2)(aq) --> BaCO3(s).
KCl + Ba(SO4) → NR (no reaction) Potassium and chloride don't react, and BaSO4 does not dissolve. Only the opposite reaction would take place: Sulfate and barium from other sources are precipitating to solid. SO4-2(aq) + Ba2+(aq) → BaSO4(s)
Ca24(aq) + 2HCO-3(aq) ----> CaCO3 + H2O(l) + CO2 (g)
You use mole ratios for two reasons. One: To balance the number of moles to get the correct answer. Two: To finalize the cancellations of the measurements to get the answer.
A suitable test chemical could be sodium chloride. Sodium chloride  (NaCl) is easily water soluble, which means the ions will  dissociate from each other. The lead(II) ions will then react with  the chloride ions to produce the insoluble salt lead(II) chloride  (PbCl2). Because it's insoluble,...
the subscript refers to how many atoms of each element are in the molocule. for instance, H2O means two hydrogen molecules and one oxygen molecule.
Both sides of a chemical equation must balance due to the law of  "Conservation of Mass" which states that in a reaction no matter is  created or destroyed. The mass of the reactants must equal the mass  of the products.   Eg.   Methane (CH4) combustion (reaction with oxygen)    CH4...
Hyrdofluoric acid has the chemical formula HF. In pure form, it is  a gas, but dissolved in water it becomes a weak acid.
The chemical equation for hydrogen to water vapor is not possible as stated. In order for hydrogen to form water in any physical state, it must combine with oxygen.The following are the word equation and the chemical equation for hydrogen and oxygen combining to form water.Hydrogen gas plus oxygen...
The substances on the left side of a chemical equation are the reactants. The right hand side substances are the products. i.e. A + B -------> C + D (reactants) (products)
2O means two molecules of oxygen involved in the reaction and O2  means two atoms of oxygen which are ready to form a bond after a  chemical reaction
  C6H12O6 + 6O2 = 6CO2 + 6H2O + (Energy)Just add the 6 at the beginning of H20, so it makes Hydrogen 12 and Oxygen 18. Balancing both sides.
To balance a chemical equation, you can change the coefficients (number of molecules). Remember: You cannot change the subscripts. When we balance an equation we change the number of atoms on one or both sides of the equation by means of simple mathematical calculation. That is, we change the...
Stoichiometery is the use of math in chemistry to determine numerical values for chemical equations, using molecular formulas and molar masses.The stoichiometric ratio for an added reactant (reagent) is the amount required to fully complete the reaction with another reactant, such that there is no...
This is because according to the law of conservation of mass mass can neither be created nor destroyed in a chemical reaction. to prove this statement correct a chemical equation should be balanced
  When a substance melts, like sugar, the chemical structure does not change. It is still sugar. Whether it is crystaline, solid (as in a lollipop), or melted, it still has the same equation - c12 h22 o11.
Sulfuric acid just adds a proton to ammonia to give ammonium: H+ + NH3 -> NH4+orH2SO4 + NH3 -> NH4+ + HSO4-
2 h2o2-->2 h2o + o2, hydrogen peroxide is relatively unstable and can be broken down by heat, agitation, contact with many substances, including tissue, light.
  Honey contains mostly Fructose and Glucose (with some other sugars and water).     Fructose - C6H12O6   Glucose - C6H12O6
The Laws of the Conservation of Mass and of Conservation of Matter.
Perfect Burn: CxHy (Carbon times Hydrogen)+Oxygen=Carbon Dioxide+Water Imperfect Burn: CxHy+Oxygen=Carbon Dioxide+Water+Carbon Monoxide+CxHy
2NH4Cl + Ca(OH)2 >> CaCl2 + 2NH3 + 2H2O   When ammonia chloride is heated with calcium hydroxide, ammonia gas  is released. Ammonia gas is less dense than air so it is collected  in an upside down test tube, by the downward displacement of air.  The water formed is often seen as droplets...
= Reactants included = Products formed = Type of reaction(i.e. Oxidation, Reduction, Neutralization, Decomposition, etc )
Denotes which way the reaction is occuring, i.e reactants ---------> productsA double headed arrow indicates equilibrium, where the reactants are not driven completely to products
The symbols are shorter for us, sometimes the names are so long that its much faster to write down the symbols.e.g. two moles of hydrogen and a single mole of oxygen combine to give two moles of water" can be more concisely written as: 2H2 + 02 --> 2H2Othis shorthand is much shorter and tells us...
Acetic acid and water doesn't react; they form a solution.
Reactants or reagents are on the left of the arrow.
Write an equation that shows the formation of a strontium ion from a neutral strontium atom. Represent electrons as e-. If a box is not needed, leave it blank.Correct answer: SrSrYour response: Sr + Correct answer: Your response: 2 e-Correct answer: Sr2+Sr^2+^Your response: Sr2+ + Correct answer: 2...
there are different equations for this question.   this one was already there:   glucose + oxygen     another equation that I found out is:     mould spores + food source + moisture = mould (eventual   mold)
6h2o + 6co2 = c6h12o6 + 6o2
Potassium is in group one, so according to solubility rules, it will aways be soluble and therefore a spectator ion. That means that it will not take part in the chemical reactionand in a net equation it would not have to be included.HgCl2 + K2S yields HgS + 2KCl(aquious)
You are doing: Magnesium + Oxygen -> Magnesium OxideSo replace the words with symbols to make the equation more advanced:Mg + O2 -> MgOAnd to balance it:2Mg + O2 -> 2MgO
4Na+O2=2Na2O? That must be the equation... Im not sure what you're asking... But, in a combustion reaction, something reacts with oxygen gas (O2). In this equation sodium is reacting with oxygen... So, yes, this is a combustion reaction.
Pentanol has a chemical formula, not equation, because it is not  acting as a reactant or product on its own. Pentanol's chemical  formula is C5H12O or C5H11OH.
Complete combustion:C6H13OH + 9O2 → 6CO2 + 7H2OIncomplete combustion:C6H13OH + 6O2 GIVES 6CO + 7H2Ohttp://scienceray.com/biology/ecology/balanced-equations-for-the-combustion-of-alcohols/
It is the reaction of the constriduous particle by the right proportions in the correct amout. this will cause the fire of the test tube eliminating the off chance that carbon monoxide in polutting the air. to do this reacction a necessary chemists is needed and can not be done by some high school...
The reaction is: KOH + HNO 3 = KNO 3 + 2 H 2 O
A formation equation is something like this: H2 + 0.5O2 --> H20. Formation equations are the only case in which a formula can have fractions, this is because the product must have one mol of the compound. In the case of Ammonia:    Hydrogen reacts with Nitrogen to form Ammonia:   H2 + N2 ...
CH3 is not a chemical equation, it is a chemical formula. CH3 is a  methyl but, it can not be on its own.
Law of mass action (also called 'Law of Guldberg & Waage')Generalized reaction equation (cf. Note): aA + bB <==> pP + qQ According to the Law of mass action: Equilibrium constant (K>/<)  is equal to [A(eq)]a.[B(eq)]b / [P(eq)]p.[Q(eq)]q (only valid for equilibrium concentrations...
The equation is 6CO2 + 6H2O --> C6H12O6 the reactants are carbon dioxide and water while the product is glucose.
convert given quantities to moles
Balance the number of atoms for each element on both sides of a  chemical equation
Copper sulfate in its solid crystal from present as pentahydrate (CuSO4 5 H2O). When heated strongly it loses water molecules and becomes CuSO4. Note that CuSO4 5 H2O is blue in color whereas CuSO4 is colourless since absorption region shifted from visible region. On further heating it is...
determines the amount of product that will form
The chemical equation is 6CO2+6H2O+3H2S to C6H12O6+ 3 H2SO4