हिंदी

Balance the given chemical reaction as per the instructions below. NaOH + H2SO4 -> Na2SO4 + H2O Write the number of atoms of 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 reactants and products.

अति संक्षिप्त 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 [पृष्ठ ५०]

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 (C) | पृष्ठ ५०

संबंधित प्रश्न

What is a balanced chemical equation? Why should a chemical equation be balanced?


Write the balanced chemical equation for the following reaction.

\[\ce{Zinc + Silver nitrate -> Zinc nitrate + Silver}\]


Balance the following equation:

\[\ce{Al2(SO4)3 + NaOH -> Al(OH)3 + Na2SO4}\]


Balance the following equation:

\[\ce{BaCl2 + H2SO4 -> BaSO4 + H2O}\]


Convey the following information in the form of a balanced chemical equation:

“An aqueous solution of ferrous sulphate reacts with an aqueous solution of sodium hydroxide to form a precipitate of ferrous hydroxide and sodium sulphate remains in solution.”


With the help of an appropriate example, justify that some of the chemical reactions are determined by the evolution of a gas.

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


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

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


Give one example of a chemical reaction characterised by the formation of a precipitate.


What do you understand by exothermic reactions?


An acid which can decolourise purple coloured potassium permanganate solution is ______.


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.


A colourless lead salt, when heated, produces a yellow residue and brown fumes.

  1. Name the lead salt.
  2. Name the brown fumes.
  3. Write a chemical equation of the reaction involved.

Write your observations and name the product when

Iron nails are added to an aqueous solution of copper sulphate.


Write word equation for the following skeletal equation:

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


Write word equation for the following skeletal equation:

\[\ce{CO + O2 -> CO2}\]


Write your observation for the following chemical reaction and name the product formed:

When sugar is heated.


Write symbolic representation for the following word equation and balance them :

Calcium carbonate → Calcium oxide + Carbon dioxide.


Balance the following equation. Also name the product formed. 

`"KCIO"_3 →  "KCI" +"O"_2`


Balance the equation stepwise.

 Ag(s) + HCl(aq) → AgCl ↓+ H2 ↑ 


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

Calcium + Nitrogen → Calcium nitride


Balance the following equation:

Fe2O3 + CO → Fe + CO2


Balance the following equation:

C + H2SO4 → CO2 + H2O + SO2


Balance the following equation:

P + HNO3 → NO2 + H2O + H3PO4


Balance the following equation:

Zn + HNO3 `→` Zn(NO3)2 + H2O + NO2


Name the fundamental law that is involved in every equation.


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

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


Choose the correct alternative and rewrite the following sentence.

Which of the following is not required to find the pH of a given solution? 


Answer the following question.
What is observed when 2 mL of dilute hydrochloric acid is added to 1 g of sodium carbonate taken in a clean and dry test tube? Write a chemical equation for the reaction involved.


Write word equation for the following molecular equation:

AgN03 + HCI → HNO3 + AgCl ↓

Word equation:

State whether AgCl is soluble or insoluble in HN03.


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.


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

\[\ce{CuO + H2SO4 -> CuSO4 + H2O}\]


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

NH3 + HCl→ NH4Cl


Name the following:

The silvery residue obtained on heating mercury [II] oxide.


An element X is trivalent. Write the balanced equation for the combustion of X in oxygen.


Balance the following simple equation:

CO2   +   C  →  CO 


Balance the following simple equation:

Zn  +   NaOH  →   Na2ZnO2   +   H2 


Balance the following simple equation:

\[\ce{N2 + H2 <=> NH3}\]


Write a balanced equation for the following word equation:

Potassium bromide + Chlorine → Potassium chloride + Bromine


A dilute ferrous sulphate solution is gradually added to the beaker containing acidified permanganate solution. The light purple colour of the solution fades and finally disappears. Which of the following is the correct explanation for the observation?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×