हिंदी
सी.आई.एस.सी.ई.आईसीएसई ICSE Class 7

Write Word Equation for the Following Chemical Reaction Given Below. Also State the Observation Seen in the Case. \\Ce{2so2 + O2 ⇌(V2o5)(450°C) 2so3}\

Advertisements
Advertisements

प्रश्न

Write word equation for the following chemical reaction given below. Also state the observation seen in the case.

\[\ce{2SO2 + O2 ⇌[V2O5][450°C] 2SO3}\]

एक पंक्ति में उत्तर
Advertisements

उत्तर

Heat is evolved in the above chemical reaction.

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 5: Language of Chemistry - Objective Type Questions

APPEARS IN

विराफ जे दलाल New Simplified Middle School Chemistry [English] Class 7
अध्याय 5 Language of Chemistry
Objective Type Questions | Q 5.4

संबंधित प्रश्न

Substitute formulae for names and balance the following equation:

Calcium carbonate reacts with hydrochloric acid to produce calcium chloride, water and carbon dioxide gas.


When water is added gradually to a white solid X, a hissing sound is heard and a lot of heat is produced forming a product Y. A suspension of Y in water is applied to the walls of a house during white washing. A clear solution of Y is also used for testing carbon dioxide gas in the laboratory.

  1. What could be solid X? Write its chemical formula.
  2. What could be product Y? Write its chemical formula.
  3. What is the common name of the solution of Y which is used for testing carbon dioxide gas?
  4. Write chemical equation of the reaction which takes place on adding water to solid X.
  5. Which characteristic of chemical reactions is illustrated by this example?

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


Write the balanced chemical equation of the following reaction.

sodium chloride + manganese dioxide + sulphuric acid → sodium hydrogen sulphate  + manganese sulphate + water + chlorine.


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

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


A student mixes sodium sulphate powder in barium chloride powder. What change would the student observe on mixing the two powders? Justify your answer and explain how he can obtain the desired change.


\[\ce{2KClO3->[MnO2] 2KCl + 3O2[g] - is a balanced equation.}\]

Give a reason why the above equation is balanced.


Balance the following simple equation:

K   +   CO2   →    K2O   +   C


Balance the given chemical reaction as per the instructions below.

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

Make a list of the elements in the chemical equation.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×