Advertisements
Advertisements
Question
Complete and balance the following chemical equations:
Fe `"SO"_4` + NaOH `→`
(aq.) (aq.)
Advertisements
Solution
\[\ce{\underset{\text{(aq.)}}{FeSO4} +\underset{\text{(aq.)}}{NaOH} -> Fe(OH)2 + Na2SO4}\]
APPEARS IN
RELATED QUESTIONS
How do the following help in bringing about a chemical change?
pressure.
FILL IN THE BLANK
........... electrolytes dissociate completely in aqueous state and allow large amount of electricity to flow through it.
FILL IN THE BLANK
Distillation is a method of obtaining pure ............. from a solution.
A chemical equation is a statement that describes a chemical change in terms of
Copper carbonate when heated, it turns :
State what you would observe when the following substance is heated in a glass test tube red lead.
Show with the help of diagram of electronic configuration how the following compound is formed from the constituent atoms.
Potassium fluoride
Give an example of a reaction where the following are involved:
Close contact
Select the correct answer for the following options:
The black residue obtained on heating copper carbonate.
A chemical reaction is often accompanied by external indications or characteristics which include –
- Colour change
- Effervescence or gas evolved
- Evolution or absorption of heat
- Formation of a precipitate.
With reference to each of the above indications, state the external indication seen during – Thermal decomposition of mercury [II] oxide.
Give a balanced equation for a reaction involving the evolution of gas on the addition of dilute acid to sodium sulphite.
Higher order Thinking question
A very hot glass on putting in cold water cracks. What does this change indicate?
Mention the various conditions required for a chemical reaction to occur.
A reaction between an acid and a base is called ______.
A thick coating of a paste of Plaster of Paris (POP) is applied over the bandage on a fractured bone. It becomes hard on drying to keep the fractured bone immobilised. Can the change in POP be reversed?
Water boiling into water vapour is an example of chemical change.
A chemical change may involve –
Which of the following is/are true when milk changes into curd?
- Its state is changed from liquid to semi solid.
- It changes colour.
- It changes taste.
- The change cannot be reversed.
Choose the correct option from below:
When carbon dioxide is passed through lime water ______.
______ is the chemical name of limestone.
