हिंदी

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

Advertisements
Advertisements

प्रश्न

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

Advertisements

उत्तर

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

 

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 1: Chemical Reactions and Equations - Exercise 1 [पृष्ठ १८]

APPEARS IN

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

वीडियो ट्यूटोरियलVIEW ALL [4]

संबंधित प्रश्न

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


 Potassium chlorate (KClO3) on heating forms potassium chloride and oxygen. Write a balanced equation for this reaction and indicate the evolution of gas.


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. 


State one characteristic of the chemical reaction which takes place when dilute hydrochloric acid is added to sodium carbonate.


Balance the following chemical equation:


Zinc oxide reacts with carbon, on heating, to form zinc metal and carbon monoxide. Write a balanced chemical equation for this reaction. Name (i) oxidising agent, (ii) reducing agent, in this reaction.

 

The removal of oxygen from a substance is called:
(a) oxidation
(b) corrosion
(c) reduction
(d) rancidity


What is a chemical equation?


Write word equation for the following skeletal equation:

\[\ce{Na + O2 ->  Na2O}\]


Balance the following equation. Also name the products formed. 

\[\ce{Ag + S -> Ag2S}\]


Balance the following equation. Also name the product formed.

N2 + H2   →  NH


What is the limitation of the reaction given in question 2?


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

Carbon   + Oxygen → Carbon dioxide


Balance the following equation:

PbO + NH3 → Pb + H2O + N2

 


\[\ce{MnO2 + 4HCl -> MnCl2 + 2H2O + Cl2}\]

0.02 moles of pure MnO2 is heated strongly with conc. HCl. Calculate the mass of chlorine gas formed.


How is a flame test performed?


In certain reaction a change of state is observed i.e. solid to liquid, liquid to gas etc. – State the change of state of the products – to give the respective reactant.

\[\ce{2H2O ->[electric][current] 2H2 + O2}\]


Name the following:

The gas evolved when a dilute acid is added to chalk [limestone].


Write an Explanation.

Balanced equations


Reema took 5ml of Lead Nitrate solution in a beaker and added approximately 4ml of Potassium Iodide solution to it. What would she observe?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×