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प्रश्न
Explain the term ‘chemical equation’.
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उत्तर
Chemical equation: “Is the symbolic representation of a chemical reaction using symbols and the formulae of the substances involved in the reaction.”
Sulphur bums in oxygen is a chemical reaction and sulphur dioxide is formed. This can be represented as \[\ce{sulphur + oxygen->[heating] sulphur dioxide}\] is word equation.
\[\ce{S + O2->[\triangle] SO2 is chemical equation.}\]
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संबंधित प्रश्न
Write the balanced chemical equation for the following reaction.
\[\ce{Barium chloride + Potassium sulphate → Barium sulphate + Potassium chloride}\]
Write the balanced chemical equation for the following reaction.
\[\ce{Zinc + Silver nitrate -> Zinc nitrate + Silver}\]
Balance the following equation:
\[\ce{NaOH + H2SO4 -> Na2SO4 + H2O}\]
State the various characteristics of chemical reactions.
Balance the following equation. Also name the product formed.
K2O + H2O → KOH
While performing the experiment with raisins to determine the percentage of water absorbed by them, a student made following measurements:
Mass of water in the beaker = 40 g
Mass of raisins before soaking = 5 g
Mass of raisins after soaking for 2 hours = 8 g
Mass of water left in the beaker after the experiment = 35 g
The percentage of water absorbed by raisins is:
Raisins are wiped off gently before final weighing with the help of
The step(s) necessary for determining the percentage of water absorbed by raisins is/are:
Choose the correct alternative and rewrite the following sentence.
Which of the following is not required to find the pH of a given solution?
When a potassium iodide solution is added to a solution of lead (II) nitrate in a test tube, a precipitate is formed.
Write the balanced chemical equation for this reaction.
