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Translate the following statements into chemical equations and then balance them. Hydrogen gas combines with nitrogen to form ammonia. (b) Hydrogen sulphide gas burns in air to give water and sulphur dioxide. (c) barium chloride reacts with aluminium sulphate to give aluminium chloride and a precipitate of barium sulphate.(d) Potassium metal reacts with water to give potassium hydroxide and hydrogen gas. |
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Answer» ong>Answer: AnswerBalancing chemical equation refers to balancing the stoichiometric COEFFICIENTS on the reactants and products side. This must be done as the chemical equation obeys the law of conservation of mass and momentum. Hydrogen sulphide gas burns in air to give water and sulphur dioxide can be expressed in TERMS of equation as H2S(g) + O2(g)→H2O(l) + SO2(g) Steps to balance chemical equation Following are the easy steps to balance the equation: Step 1: Write the Unbalanced Chemical Equation Let US consider the given REACTION. That is the reaction between Hydrogen sulphide gas burns in air to give water and sulphur dioxide. H2S + 02 → SO2 + H2O Step 2: Write Down Number of Atoms Write down the number of atoms of each element present on both reactant and product side Atom Reactant side Product side H 1 2 S 1 1 O 2 3 Step 3: Add Coefficients To Balance the Mass in a Chemical Equation Note that the coefficients that are to be added must be a whole number and ONE coefficient added applies to all the atoms present in that one particular molecule. |
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