Advertisements
Advertisements
प्रश्न
State whether the following statement is true or false:
A chemical equation can be balanced easily by altering the formula of a reactant or product.
Advertisements
उत्तर
False
Formula of a reactant or product cannot be altered, but chemical equation is balanced by multiplying the reactant or product with numbers like 2,3,4,5 and so on to balance the number of atoms in the chemical equation.
APPEARS IN
संबंधित प्रश्न
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 | ....................... |
Correct and balance the following equation:
N + H 
NH3
Explain, with example, how the physical states of the reactants and products can be shown in a chemical equation.
Balance the following equation and add state symbols:
Zn + HCI → ZnCI2 + H2
Is Electrolysis of water an endothermic reaction or an exothermic reaction?
Why do we need to balance chemical equations?
Write word equation for the following skeletal equation:
\[\ce{Na + O2 -> Na2O}\]
Balance the following equation .
N2 + O2 → NO
Balance the following equation. Also name the product formed.
`"NaNO"_3 → "NaNO"_2 + "O"_2` Name of product (s)
Balance the following equation. Also name the product formed.
`"H"_2 +"CI"_2 → "HCI"`
Write the answer to the following.
Explain the similarity and difference in two events, namely adding NaOH to water and adding CaO to water.
Balance the following equation:
PbO + NH3 → Pb + H2O + N2
Balance the following equation:
HNO3 + H2S → NO2 + H2O + S
Write the balanced chemical equation of the following reaction. sodium hydroxide + sulphuric acid → sodium sulphate + water
Name the following:
Two non-metal which react explosively when brought in close contact.
What is meant by ‘reactants’ and ‘products’ in a chemical equation?
Give an example of a chemical equation in which two reactants form:
one product
Fill in the blank with the correct word from the options given below:
A chemical equation is a shorthand form for a _______ change.
Give a balanced equation by partial equation method, [steps are given below].
The reaction of excess ammonia with chlorine – Ammonia as a reducing agent
- Ammonia first reacts with chlorine to give hydrogen chloride and nitrogen.
- Hydrogen chloride then further reacts with excess ammonia to give ammonium chloride.
Underline the compound in the equation given below, it is incorrectly balanced and write the correct balancing for the same.
CaC2 + N2 → 2CaCN2 + C
