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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 yourcompaunds or it is not posible to answere this.
This is a physical change, not a chemical one, but you can write anequation. CO2(g) --> CO2(l) However, make sure you write the 2's as subscripts.
Formula, not equation. An equation describes a reaction, not achemical. Lecithin is a mixture of a lot of different chemicals, mostlyphospholipids.
A chemical equation is a written symbolic representation of achemical reaction. The reactant chemical(s) are given on theleft-hand side and the product chemical(s) on the right-hand side.The law of conservation of mass states that no atoms can be createdor destroyed in a chemical reaction, so the...
A chemical equation represents a reaction--a change of something from one state to another. For example, the burning of hydrogen to form water: 2H 2 + O 2 => 2H 2 O A chemical formula represents a compound, such as H 2 O for water. However, muddy water is not a compound. It is water with a...
it must be cleared that while writing a chemical equation... itmust be in symbols of that element then the numbers of the atoms used in the reaction must be equatedto both the sides that is it must be equal to right hand side aswell as left hand side... we need to remember the symbols of thatelement
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 hydrogenphosphate and sodium bicarbonate. (All numbers should besubscripts). Dipotassium phosphate does not exist. Tripotassium phosphate, K3PO4does, but it's not acidic and therefore does not react with...
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, whatsubstances are produced and, in a balanced equation, provides thecoefficients to tell us in what ratio the substances react or areproduced.
2HCl + CaCO3 -> CO2 + H2O + CaCl2 You should probably refer to muriatic acid as hydrochloric acid, asthis is a much more well know name for it, and also the IUPAC name.
Since NaOH is easily water-soluble, complete dissociation willoccur, and you will only have ions. Adding manganese ions (in theform of either manganese chloride or manganese nitrate) will giveyou the net ionic equation Mn+2(aq) + 2OH-(aq) --> Mn(OH)2(s).
Due to the law of conservation of mass and matter, all particlesmust have an equal number on both sides of a chemical equation. Anequal number of atoms of each element involved must be on each sideof the equation.
Law of conservation of mass is satisfied whenbalancing 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 chemicalequation tells you what substances are reacting, what substancesare produced and, in a balanced equation, provides the coefficientsto 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 basicsalt when dissolved in water. Sodium carbonate doesn't have aequation itself, but when dissolved in water (deionization), itlooks like this: Na 2 CO3(s) 2 Na + (aq) + (CO3...
The general form is: "Reactants" ----> "Products" Therefore theright 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-numbercoefficient placed in front of a chemical formula. This upholds theLaw of Conservation of Matter, which says that matter cannot becreated or destroyed. These coefficients must be in the lowestpossible ratio.
Because now is the most important method to describe a chemicalprocess. In the future probable the mathematical modelling will be used.
representative particles , moles, and mass .
CuCl 2 ( s ) +H 2 O ( l ) → Cu 2+ ( aq ) +2Cl - ( aq )
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 productsin 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 netionic: Ba(+2)(aq) + CO3(-2)(aq) --> BaCO3(s).
KCl + Ba(SO 4 ) → NR (no reaction) Potassium and chloride don't react, and BaSO 4 does not dissolve. Only the opposite reaction would take place: Sulfate and barium from other sources are precipitating to solid. SO 4 -2 (aq) + Ba 2 + (aq) → BaSO 4(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 willdissociate from each other. The lead(II) ions will then react withthe chloride ions to produce the insoluble salt lead(II) chloride(PbCl2). Because it's insoluble, you'll get a...
the subscript refers to how many atoms of each element are in the molocule. for instance, H 2 O 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 iscreated or destroyed. The mass of the reactants must equal the massof the products. Eg. Methane (CH4) combustion (reaction with oxygen) CH4+2O2 = 2H2O+CO2 Reactants ...
Hyrdofluoric acid has the chemical formula HF. In pure form, it isa 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...
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 O2means two atoms of oxygen which are ready to form a bond after achemical 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...
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+ or H2SO4 + 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).\n. \nFructose - C6H12O6\nGlucose - 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 gasis released. Ammonia gas is less dense than air so it is collectedin an upside down test tube, by the downward displacement of air.The water formed is often seen as droplets on the side of the...
= Reactants included = Products formed = Type of reaction(i.e. Oxidation, Reduction, Neutralization, Decomposition, etc )
Denotes which way the reaction is occuring, i.e reactants ---------> products A 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: 2H 2 + 0 2 --> 2H 2 O this shorthand is much shorter and...
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: . Sr. Sr. Your response: . Sr. + . Correct answer: . Your response: . 2 e-. Correct answer: . Sr2+....
there are different equations for this question.\nthis one was already there:\nglucose + oxygen\n. \nanother equation that I found out is:\n. \nmould spores + food source + moisture = mould (eventual\nmold)
6h 2 o + 6co 2 = c 6 h 12 o 6 + 6o 2
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 reaction and in a net equation it would not have to be included. HgCl 2 + K 2 S yields HgS + 2KCl(aquious)
You are doing: Magnesium + Oxygen -> Magnesium Oxide So replace the words with symbols to make the equation more advanced: Mg + O2 -> MgO And 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 notacting as a reactant or product on its own. Pentanol's chemicalformula is C5H12O or C5H11OH.
Complete combustion: C6H13OH + 9O2 → 6CO2 + 7H2O Incomplete combustion: C6H13OH + 6O2 GIVES 6CO + 7H2O http://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 --> NH3 ...
CH3 is not a chemical equation, it is a chemical formula. CH3 is amethyl but, it can not be on its own.
Law of mass action (also called 'Law of Guldberg & Waage') Generalized reaction equation ( cf. Note ): a A + b B < == > p P + q Q 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...
The equation is 6CO 2 + 6H 2 O --> C 6 H 12 O 6 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 achemical equation
2 CH 3 CH 2 OH → CH 3 CH 2 OCH 2 CH 3 + H 2 O (on 120'C)
Copper sulfate in its solid crystal from present as pentahydrate (CuSO 4 5 H 2 O). When heated strongly it loses water molecules and becomes CuSO 4 . Note that CuSO 4 5 H 2 O is blue in color whereas CuSO 4 is colourless since absorption region shifted from visible region. On further heating it...
determines the amount of product that will form
The chemical equation is 6CO2+6H2O+3H2S to C6H12O6+ 3 H2SO4