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How Will You Indicate A Solution Made in Water in a Chemical Equation? - Science

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प्रश्न

How will you indicate a solution made in water in a chemical equation?

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उत्तर

A solution made in water is indicated by writing (aq) after its formula in a chemical equation.
Example:

 

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पाठ 1: Chemical Reactions and Equations - Exercise 1 [पृष्ठ १८]

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लखमीर सिंह Chemistry (Science) [English] Class 10
पाठ 1 Chemical Reactions and Equations
Exercise 1 | Q 9.1 | पृष्ठ १८

व्हिडिओ ट्यूटोरियलVIEW ALL [4]

संबंधित प्रश्‍न

Translate the following statement into chemical equation and then balance the equation:

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Write complete balanced equation for the following reaction:

Calcium (solid) + water (liquid)  Calcium Hydroxide (solution) + Hydrogen (gas)


When hydrogen is passed over copper oxide, copper and steam are formed. Write a balanced equation for this reaction and state which of the chemicals are reactants.


Explain, with example, how the physical states of the reactants and products can be shown in a chemical equation.


With the help of an appropriate example, justify that some of the chemical reactions are determined by Change in colour 

Give chemical equation for the reaction involved in the above case. 


What do you understand by exothermic reactions?


Balance the equation stepwise.
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Nitrogen + Oxygen → Nitrogen monoxide


Write the chemical equation for the following word equation and balance them.

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Balance the following equation:

 Fe + H2O → Fe3O4 + H2

 


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Ca + N2 → Ca3N2


Balance the following equation:

PbO + NH3 → Pb + H2O + N2

 


Balance the following equation:

Pb3O4 → PbO + O2


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A chemical reaction is generally accompanied by certain external indications or characteristics. These include – change of – (a) colour (b) state (c) smell (d) evolution of gas (e) formation of precipitate (f) evolution or absorption of heat. With reference to change of colour – state the change in colour seen when the following are heated – copper carbonate.


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For the equation: FeCl3 + 3NH4OH 3NH4Cl + Fe(OH)3 ↓

Answer the following:

Name the reactants and the products in the above equation.


Balance the following simple equation:

NaHCO3  +  H2SO4  →  Na2SO4  +  H2O  +  CO2 


CaCO3 + 2HCl[dil.] → CaCl2 + H2O + CO2 [g]

State the information not conveyed by the above chemical equation. 


What is a chemical equation?


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