A chemical equation can be made more informative by adding additional information to the chemical equation. This is done as follows:
(i) Reaction conditions:The information regarding temperature, pressure, and catalyst etc. is provided above the arrow (→ or =) separating the reactants and products.
For example, nitrogen and hydrogen react to form ammonia under the condition; temperature =450°C, pressure =200-900 atm, and in the presence of a catalyst (a mixture of an iron and molybdenum).
(ii) Physical state of reactants and products:Information regarding the physical states of the reactants and precuts, can be provided by using the letters(s), (l), (g) and (aq) for solid, liquid, gas and a solution in water, respectively, at the end of the formula of the substance involved. For example, solid sodium metal reacts with water atomic room temperature to produce hydrogen gas, and a solution of sodium hydroxide in water. Then , the complete chemical equation is..
2Na(s) + 2H2O (l) → 2NaOH (aq) + H2 (g)
(iii) Heat absorbed or evolved:Chemical reactions proceed with the evolution or absorption of heat. The reactions in which heat is absorbed are called endothermic reactions. The reactions in which heat is given out are called exothermic reactions. This information is provided by adding a heat term only the product-side (right hand side) of the chemical equation. For example,
(a) When carbon is burnt in air (or oxygen) heat is evolved. Then, the chemical equation is written as,
C(s) + O2 (g) → CO2 (g) + Heat (393 kJ)
The reactions with +Heat term on the product side are called exothermic reactions, while those with -Heat term on the product side are called endothermic reactions.
(iv) Concentration of the reactants and products:This information is added to the chemical equation by adding the word dil. (for dilute) or conc.(for concentrated) before the formulae of the reactants and products. For example, in the reaction between zinc and dilute sulphuric acid, the term dil. is added before the formulae of sulphuric acid.
Zn(s) + dil. H2SO4(aq) → ZnSO4(aq) + H2(g)
(v) Rate of reaction:This information is not commonly added to the chemical equation. Sometimes, however, the term fast or slow may be added over the arrow, if the reaction is fast or slow. For example, the reaction between HCl and NaOH in solution is a fast reaction. So,
HCl (aq) + NaOH(aq) fast NaCl(aq) + H2O(l)
The states of reactants and products and indication of heat either reaction is exothermic or endothermic.
Type your answer here... The coefficients give the molar ratio of the reactants
A spectrograph is an instrument for chemical analysis.
The MSDS - Material Safety Data Sheets... Hope this helped!
It is the ratio which means how many atoms it contains....i think
being able to write a balanced equation for a reaction is very important. By balancing an equation we can tell how much material we will need to start with, what the likely products to form, and how much of these products will form
Type your answer here... The coefficients give the molar ratio of the reactants
A chemical equation shows a reaction between to chemicals using chemical formulas.
Pyrogallic acid and sodium hydroxide is used to provide anaerobiosis.
Your question doesn't make any sense. It's impossible to provide a chemical equation when the only information given is either one of the products or reactants. Try again.
The answer depends on the quadratic equation. And since you have not bothered to provide that crucial bit of information, I cannot provide a more useful answer.The answer depends on the quadratic equation. And since you have not bothered to provide that crucial bit of information, I cannot provide a more useful answer.The answer depends on the quadratic equation. And since you have not bothered to provide that crucial bit of information, I cannot provide a more useful answer.The answer depends on the quadratic equation. And since you have not bothered to provide that crucial bit of information, I cannot provide a more useful answer.
A spectrograph is an instrument for chemical analysis.
The coordinates of the points on the curve represent solutions of the equation.
the prefix can provide information towards the geometric shape of the chemical (how molecules are laid out).
The MSDS - Material Safety Data Sheets... Hope this helped!
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It is the ratio which means how many atoms it contains....i think
Material Safety Data Sheets (MSDS) provide necessary information about precautions for protecting against known hazards associated with chemical materials. Hardware components contain a certain amount of toxic level and it must be handled carefully. MSDS often include useful information on chemical, physical and toxicological properties, along with suggestions for storing, transporting and disposing of chemicals.