हिंदी

Balance the given chemical reaction as per the instructions below. NaOH+HX2SOX4⟶NaX2SOX4+HX2O Write the number of atoms of various elements in the reactants and products.

Advertisements
Advertisements

प्रश्न

Balance the given chemical reaction as per the instructions below.

\[\ce{NaOH + H2SO4 -> Na2SO4 + H2O}\]

Write the number of atoms of various elements in the reactants and products.

एक पंक्ति में उत्तर
Advertisements

उत्तर

  Reactants
(Left side)
Products
(Right side)
Element Number of atoms Number of atoms
Na 1 2
O 5 5
H 3 2
S 1 1
shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 3: Chemical reactions and equations - Answer the following questions

APPEARS IN

एससीईआरटी महाराष्ट्र Science and Technology Part 1 [English] Standard 10 Maharashtra State Board
अध्याय 3 Chemical reactions and equations
Answer the following questions | Q 1.3

संबंधित प्रश्न

Correct and balance the following equation:

\[\ce{Ca + H2O -> CaOH + H}\]


Balance the following equation:

\[\ce{H2O2 -> H2O + O2}\]


Write the balanced equation for the following reaction, and add the state symbol:

Sodium hydroxide reacts with sulphuric acid to produce sodium sulphate and water.


Carbon monoxide reacts with hydrogen under certain conditions to form methanol (CH3OH). Write a balanced chemical equation for this reaction indicating the physical states of reactants and product as well as the conditions under which this reaction takes place.


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


Which of the following does not involve a chemical reaction?


Zinc oxide reacts with carbon, on heating, to form zinc metal and carbon monoxide. Write a balanced chemical equation for this reaction. Name

  1. oxidising agent, and
  2. reducing agent,

in this reaction.


Write word equation for the following skeletal equation:

\[\ce{KClO3 -> KCl + O2}\]


Balance the following chemical equation :

Na2CO3 + HCl  →  NaCI + H2O + CO2


Balance the following chemical equation :

H2 + O2   →  H2O


Balance the following equation :

Pb3O4 → PbO + O2


Write your observation and name the product when zinc reacts with dilute hydrochloric acid.


While performing the experiment with raisins to determine the percentage of water absorbed by them, a student made following measurements:

Mass of water in the beaker = 40 g

Mass of raisins before soaking = 5 g

Mass of raisins after soaking for 2 hours = 8 g

Mass of water left in the beaker after the experiment = 35 g

The percentage of water absorbed by raisins is:


Raisins are wiped off gently before final weighing with the help of


Balance the equation stepwise.

NaOH(aq) + H2SO4(aq) → Na2SO4(aq) + H2O(l)


Balance the following equation:

PbS + O2 → PbO + SO2


Balance the following equation:

C + H2SO4 → CO2 + H2O + SO2


Why should an equation be balanced? Explain with the help of a simple equation.


Write the balanced chemical equation of the following reaction. potassium bicarbonate + sulphuric acid → potassium sulphate + carbon dioxide + water


Write the balanced chemical equation of the following reaction.

silver nitrate → silver + nitrogen dioxide + oxygen


Write the balanced chemical equation of the following reaction.

aluminium + sodium hydroxide + water → sodium meta aluminate + hydrogen


(a) Give only one suitable chemical test to identify the following gases.

  1. Ammonia
  2. Sulphur dioxide
  3. Hydrogen Chloride
  4. Chlorine
  5. Carbon Dioxide
  6. Oxygen
  7. Hydrogen

(b) Select a basic gas mentioned in Q.1 (a). How is the basic nature suspected?

(c)Select acidic gases from the gases mentioned in Q.1 (a). How is the acidic nature suspected?

(d) State the gas responsible for bleaching action.

(e)Which gas turn blue cobalt chloride paper light pink?

 


Write the name and molecular formula of a carbon compound having its name suffixed with "-ol" and having two carbon atoms in its molecule. With the help of a chemical equation indicate what happens when this compound is heated with excess conc. H2SO4.


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.

NH3 + HCl ⇌ NH4Cl 


In certain reaction an insoluble solid called precipitate is formed. State the colour and name of the precipitate formed in the following reaction involving addition of:

Dilute hydrochloric acid to silver nitrate.


In certain reaction an insoluble solid called precipitate is formed. State the colour and name of the precipitate formed in the following reaction involving addition of:

Iron [II] sulphate to sodium hydroxide.


Give word equation for the following chemical reaction and give the names of the product formed.

NH3 + HCl→ NH4Cl


Give an example of a chemical equation in which two reactants form:

four product


Balance the following simple equation:

C   +   O2  →  CO


Balance the following simple equation:

Fe  +   H2O  ⇌   Fe3O4   +   H2 


Balance the following simple equation:

Zn  +   NaOH  →   Na2ZnO2   +   H2 


Balance the following simple equation:

Al  +   H2SO4  →   Al2(SO4)3   +   H2 


Balance the following simple equation:

Mg  +  CO2  →  MgO  +  C


Write a balanced equation for the following word equation:

Lead dioxide [lead (IV) oxide] → Lead monoxide + Oxygen 


Fill in the blank with the correct word from the options given below:

A chemical equation is a shorthand form for a _______ change.


Underline the compound in the equation given below, it is incorrectly balanced and write the correct balancing for the same.

PbO2 +4HCl → PbCl2 + H2O + Cl2


Which among the following is(are) double displacement reaction(s)?

  1. `"Pb" + "CuCl"_2 -> "PbCl"_2 + "Cu"`
  2. `"Na"_2"SO"_4 + "BaCl"_2 -> "BaSO"_4 + 2"NaCl"`
  3. `"C" + "O"_2 -> "CO"_2`
  4. `"CH"_4 + 2"O"_2 -> "CO"_2 + 2"H"_2"O"`

Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×