English

Write Balanced Chemical Equations for the Reactions Represented by Word Equations in the Conditions for Chemical Reaction. - Chemistry

Advertisements
Advertisements

Question

Write balanced chemical equations for the reactions represented by word equations in the conditions for chemical reaction.

Short/Brief Note
Advertisements

Solution

  1.  2Na + H2O → 2NaOH + H2
  2. AgNO3 + NaCl → AgCl + NaNO3
  3. 2KClO3  →  2KCl + 3O2
  4.  6CO2 + 6H2O → C6H12O6 + 6O2
shaalaa.com
  Is there an error in this question or solution?
Chapter 5: Language of Chemistry - Additional questions

APPEARS IN

Selina Concise Chemistry [English] Class 7 ICSE
Chapter 5 Language of Chemistry
Additional questions | Q 3

RELATED QUESTIONS

State whether the following statement is true or false. In case a statement is false, write the corrected statement.

Iron pipes coated with zinc do not get rusted easily.


Changes in which new substances are formed are called ______ changes.


What do you observe when iron nail is kept in copper sulphate solution for sometime.


FILL IN THE BLANK

The new substances formed during a chemical reaction are called the ..................


What are chemical reactions?


Name three reducing agents ?


Differentiate between in Chemical reaction and chemical equation.


What is the reaction called when oxidation and reduction take place simultaneously? Explain with one example.


Complete the statement by filling the gaps using appropriate term from the terms given in the bracket.

(slow, coloured, arrow, fast, smell, milky, physical, product, chemical, reactant, covalent, ionic, octet, duplet, exchange, sharing, equality sign)

The spoiling of food is a chemical change which is recognized from the generation of certain ______ due to it.


Show with the help of diagram of electronic configuration how the following compound is formed from the constituent atoms.

Hydrogen chloride


Give an example of a reaction where the following are involved

Pressure


Give an example of the following chemical change.

Two solids combine to form a liquid


What do you understand by precipitation reaction? Explain with examples.


Give a word equation for the following reaction.

A salt which reacts with ammonium hydroxide to give a reddish brown precipitate.


Give reason for the following:

Electrolytic decomposition of water is a reaction involving change of state.


Give reason for the following:

The catalytic oxidation of sulphur dioxide to sulphur trioxide is represented by a double arrow {⇌} 
between the reactants and products, formed in the chemical reaction.


Give balanced equation for the following conversion affected by heat alone on the substance:

Zinc carbonate to zinc oxide


Give a balanced equation for a reaction involving the evolution of gas on the addition of dilute acid to calcium carbonate.


Explain with the help of balanced equations, how precipitation reactions are used for identifying the positive radicals in three different salts, each having a different cation [positive ion].


Which of the following is/are true when milk changes into curd?

  1. Its state is changed from liquid to semi solid.
  2. It changes colour.
  3. It changes taste.
  4. The change cannot be reversed.

Choose the correct option from below:


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×