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प्रश्न
Why do we need to balance chemical equations?
Why do we balance a chemical equation?
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उत्तर
A chemical equation needs to be balanced so as to make the number of atoms of the reactants equal to the number of atoms of the products.
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संबंधित प्रश्न
Balance the given equation:
NH3 + CuO 
Cu +N2 +H2O
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
Write word equation for the following skeletal equation:
\[\ce{CO + O2 -> CO2}\]
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.
`"K" + "CI"_2 → "KCI"`
Balance the following equation. Also name the product formed.
`"CO" + "O"_2 → " CO"_2`
Write your observation and name the product when zinc reacts with dilute hydrochloric acid.
Balance the following equation:
Zn + KOH → K2ZnO2 + H2
Answer the following question:
How do acids and bases react with each other? What is the name of the process? What product is obtained from these reactions?
Write word equation for the following molecular equation:
Na2SO3 + 2HCl [dil.] → 2NaCl + H2O + SO2 [g]
In certain reaction an insoluble solid called precipitate is formed. State the colour and name of the precipitate formed in the following reaction involving addition of:
Lead nitrate to ammonium hydroxide.?
Balance the following simple equation:
Mg + N2 → Mg3N2
Balance the following simple equation:
\[\ce{Ca(OH)2 + HNO3 -> Ca(NO3)2 + H2O}\]
Balance the following simple equation:
K + H2O → KOH + H2
Balance the following simple equation:
KBr + Cl2 → KCl + Br2
Balance the following simple equation:
Mg + CO2 → MgO + C
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.
Which of the following is not a physical change?
Dil. HCl is added to Zn granules. How will you prove that chemical change has taken place here? Support your response with two arguments.
