Advertisements
Advertisements
Question
Complete the given chemical reaction.
\[\ce{CuSO_{4(aq)} + Fe_{(s)} ->}\]______ + ______
Advertisements
Solution
\[\ce{\underset{\text{sulpate}}{\underset{\text{Copper}}{CuSO_{4(aq)}}} + \underset{\text{Iron}}{Fe_{(s)}} -> \underline{\underset{\text{sulphate}}{\underset{\text{Ferrous}}{FeSO_{4(aq)}}}} + \underline{\underset{\text{Copper}}{Cu_{(s)}}}}\]
APPEARS IN
RELATED QUESTIONS
Methyl orange is used as an indicator. It shows colour change in acid, base and neutral substance. Tabulate your result as follows:
| Indicator | Colour change | Inference |
| Methyl Orange | No change | ...................... |
| .................... | Acid | |
| Yellow | ....................... |
Balance the chemical equation.
\[\ce{HNO3 +Ca(OH)2 -> Ca(NO3)2 + H2O}\]
Balance the following equation:
\[\ce{Na + O2 -> Na2O}\]
When hydrogen is passed over copper oxide, copper and steam are formed. Write a balanced equation for this reaction and state which of the chemicals are:
- elements
- compounds
- reactants
- products
- metal
- non-metal
Write a balanced chemical equation for the process of photosynthesis giving the physical states of all the substances involved and the conditions of the reaction.
State one characteristic of the chemical reaction which takes place when dilute hydrochloric acid is added to sodium carbonate.
Give one example of an endothermic reaction.
One of the following does not happen during a chemical reaction. This is:
You are given the solution of lead nitrate. In order to obtain a yellow precipitate you should mix with it a solution of ______.
An acid which can decolourise purple coloured potassium permanganate solution is ______.
The chemical equations are balanced to satisfy one of the following laws in chemical reactions. This law is known as ______.
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.
- What could be solid X? Write its chemical formula.
- What could be product Y? Write its chemical formula.
- What is the common name of the solution of Y which is used for testing carbon dioxide gas?
- Write chemical equation of the reaction which takes place on adding water to solid X.
- Which characteristic of chemical reactions is illustrated by this example?
A white precipitate can be obtained by adding dilute sulphuric acid to ______.
Explain the following reaction with one suitable example .
Decomposition reaction
Balance the following chemical equation :
Na2CO3 + HCl → NaCI + H2O + CO2
Write your observation for the following chemical reaction and name the product formed:
When sugar is heated.
Write your observation for the following chemical reaction and name the product formed :
When water is added to quick lime?
Balance the following equation. Also name the product formed.
`"H"_2 +"CI"_2 → "HCI"`
Balance the following equation. Also name the product formed.
`"Na"+ "H"_2 "O" → "NaOH"+ "H"_2`
Complete the following equation:
CH4 + O2 —>
Complete the following equation:
CH2 + H5OH `("Hot Conc." H_2SO_4)/`>
Balance the equation stepwise.
SO2(g) + H2S(aq) → S(s) + H2O(l)
State the information conveyed by the following equation:
Zn(s) + 2HCl(aq) → ZnCl2(aq) + H2 ↑
Balance the following equation:
C + H2SO4 → CO2 + H2O + SO2
Balance the following equation:
Zn + HNO3 `→` Zn(NO3)2 + H2O + NO2
Write the balanced chemical equation of the following reaction.
copper + nitric acid → copper nitrate + nitric oxide + water
\[\ce{MnO2 + 4HCl -> MnCl2 + 2H2O + Cl2}\]
0.02 moles of pure MnO2 is heated strongly with conc. HCl. Calculate the mass of salt formed.
1 g of copper powder was taken in a China dish and heated. What change takes place on heating? When hydrogen gas is passed over this heated substance, a visible change is seen in it. Give the chemical equations of reactions, the name and the color of the products formed in each case.
Name the substance that is getting oxidised in the thermit process.
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.
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 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.
\[\ce{2H2O ->[electric][current] 2H2 + O2}\]
Representation of the results of a chemical change – is a chemical equation.
For the equation: FeCl3 + 3NH4OH 3NH4Cl + Fe(OH)3 ↓
Answer the following:
Name the reactants and the products in the above equation.
Explain the term ‘chemical equation’.
Give an example of a chemical equation in which two reactants form:
four product
Balance the following simple equation:
NO + O2 → NO2
CaCO3 + 2HCl[dil.] → CaCl2 + H2O + CO2 [g]
State the information provided by the above chemical equation.
Match the columns.
| Reactants | Products | Types of chemical reaction | ||
| 1. | MgH2 | → | Mg + H2 | Endothermic |
| 2. | 2H2S + SO2 | → | 3S + 2H2O | Oxidation |
| 3. | CaO + H2O | → | Ca(OH)2 + heat | Exothermic |
| Redox | ||||
Dil. HCl is added to Zn granules. How will you prove that chemical change has taken place here? Support your response with two arguments.
Why should a magnesium ribbon be cleaned before burning in air?
