Advertisements
Advertisements
प्रश्न
Write down what you understood from the following chemical reaction.
AgNO3(aq) + NaCI(aq) → AgCI ↓ + NaNO3(aq)
Advertisements
उत्तर
i. AgNO3 and NaCl are reactants and AgCl and NaNO3 are products.
ii. Reactants and the product NaNO3 are in aqueous form.
iii. Product AgCl is formed in the form of precipitate.
APPEARS IN
संबंधित प्रश्न
What is a balanced chemical equation? Why should a chemical equation be balanced?
Balance the given equation:
HNO3 + Ca(OH)2
Ca(NO3)2 + H2O
Giving examples, state the difference between balanced and unbalanced chemical equations.
With the help of an appropriate example, justify that some of the chemical reactions are determined by Change in colour
Give chemical equation for the reaction involved in the above case.
State one characteristic of the chemical reaction which takes place when lemon juice is added gradually to potassium permanganate solution.
Which of the following does not involve a chemical reaction?
You are given the solution of lead nitrate. In order to obtain a yellow precipitate you should mix with it a solution of:
(a) potassium chloride
(b) potassium nitride
(c) potassium sulphide
(d) potassium iodide
One of the following is an exothermic reaction. This is:
(a) electrolysis of water
(b) conversion of limestone into quicklime
(c) process of respiration
(d) process of photosynthesis
When metal X is treated with a dilute acid Y, then a gas Z is evolved which burns readily by making a little explosion.
(a) Name any two metals which can behave like metal X.
(b) Name any two acids which can behave like acid Y.
(c) Name the gas Z.
(d) Is the gas Z lighter than or heavier than air?
(e) Is the reaction between metal X and dilute acid Y, exothermic or endothermic?
(f) By taking a specific example of metal X and dilute acid Y, write a balanced chemical equation for the reaction which takes place. Also indicate physical states of all the reactants and products.
A colourless lead salt, when heated, produces a yellow residue and brown fumes.
(a) Name the lead salt.
(b) Name the brown fumes.
(c) Write a chemical equation of the reaction involved.
Name the type of chemical reaction shown by the following equation:
2Mg+ O2 → 2MgO
Write word equation for the following skeletal equation:
\[\ce{NaOH + H2SO4 -> Na2SO4 + H2O}\]
Write symbolic representation for the following word equation and balance them :
Iron + Sulphur → Iron sulphide.
Balance the following equation :
Pb3O4 → PbO + O2
Balance the following equation. Also name the product formed.
`"H"_2 +"CI"_2 → "HCI"`
Balance the following equation. Also name the product formed.
CO2 + C → CO
In electrolysis of water, why is the volume of gas collected over one electrode double that of gas collected over the other electrode?
What is a chemical equation? Why it is necessary to balance it?
Balance the following equation:
Pb3O4 → PbO + O2
Write the balanced chemical equations of the following reactions.
chlorine + sulphur dioxide + water → sulphuric acid + hydrogen chloride
\[\ce{MnO2 + 4HCl -> MnCl2 + 2H2O + Cl2}\]
0.02 moles of pure MnO2 is heated strongly with conc. HCl. Calculate the volume of chlorine gas formed at S.T.P.
\[\ce{MnO2 + 4HCl -> MnCl2 + 2H2O + Cl2}\]
0.02 moles of pure MnO2 is heated strongly with conc. HCl. Calculate the mass of acid required.
How is a flame test performed?
Write word equation for the following molecular equation:
\[\ce{CaCO3 + 2HCl ->[\triangle] CaCl2 + H2O + CO2 [g]}\]
Word equation:
State which characteristic does [g] in the above reaction indicate. The word equation of:
A chemical reaction is generally accompanied by certain external indications or characteristics. These include – change of – (a) colour (b) state (c) smell (d) evolution of gas (e) formation of precipitate (f) evolution or absorption of heat. With reference to change of colour – state the change in colour seen when the following are heated – copper carbonate.
A chemical reaction is generally accompanied by certain external indications or characteristics. These include – change of – (a) colour (b) state (c) smell (d) evolution of gas (e) formation of precipitate (f) evolution or absorption of heat. With reference to change of colour – state the change in colour seen when the following are heated – zinc carbonate.
Name the following:
The silvery residue obtained on heating mercury [II] oxide.
Name the following:
Two gases which react under pressure in presence of a catalyst at elevated temperatures to give a gaseous product.
An element X is trivalent. Write the balanced equation for the combustion of X in oxygen.
Balance the following simple equation:
Mg + N2 → Mg3N2
Balance the following simple equation:
NO + O2 → NO2
Balance the following simple equation:
H2 + O2 → H2O
Balance the following simple equation:
NaOH + Cl2 → NaCl + NaClO + H2O
Write a balanced equation for the following word equation:
Calcium hydroxide + Ammonium chloride → Calcium chloride + Water + Ammonia
Underline the compound in the equation given below, it is incorrectly balanced and write the correct balancing for the same.
3CuO + NH3 → 3Cu + 3H2O + N2
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?
What is a reactant in a chemical equation?
