Advertisements
Advertisements
Question
Balance the following equation:
\[\ce{P + O2->P2O5}\]
Advertisements
Solution
\[\ce{P + O2->P2O5}\]
To balance O atoms on both sides
\[\ce{P + 5O2->2P2O5}\]
There are 4 P atoms on RHS
∴ Make P atoms 4 on LHS
\[\ce{4P + 5O2->2P2O5}\]
Atoms of P and O are equal on both sides.
APPEARS IN
RELATED QUESTIONS
Balance the following equation:
`Fe +O_2 → Fe_3 O_4`
Write your observations and name the product when
Zinc reacts with dilute hydrochloric acid.
Balance the following equation:
\[\ce{Al + O2->Al2O3}\]
Balance the following equation:
\[\ce{CuO + NH3->Cu + H2O + N2}\]
Balance the following important equation:
NaHCO3 + H2SO4 → Na2SO4 + H2O + CO2
Balance the following important equation:
(NH4)2SO4 + NaOH → Na2SO4 + H2O + NH3
Solid calcium oxide reacts vigorously with water to form calcium hydroxide accompanied by liberation of heat. This process is called slaking of lime. Calcium hydroxide dissolves in water to form a solution called lime water. Which among the following is (are) true about slaking of lime and the solution formed?
- It is an endothermic reaction
- It is an exothermic reaction
- The pH of the resulting solution will be more than seven
- The pH of the resulting solution will be less than seven
Write the balanced chemical equations for the following reactions and identify the type of reaction in each case.
- Iron (III) oxide reacts with aluminum and gives molten iron and aluminum oxide.
- Magnesium ribbon is burnt in an atmosphere of nitrogen gas to form solid magnesium nitride.
- Chlorine gas is passed in an aqueous potassium iodide solution to form potassium chloride solution and solid iodine.
- Ethanol is burnt in air to form carbon dioxide, water and releases heat.
Which among the following change is exothermic or endothermic in nature?
Dissolution of ammonium chloride in water
Write the balanced equation for the following chemical reaction.
\[\ce{Hydrogen + Chlorine -> Hydrogen chloride}\]
