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1. The chemical equation \(Na_2SO_{4(aq)}+BaCl_{2(aq)}→BaSO_{4(s)↓}+2NaCl_{(aq)}\) represents which of the following types of reaction?
2. Which of the following statements are correct about a chemical equilibrium?
(i) It is dynamic in nature.
(ii) The rate of the forward and backward reactions are equal at equilibrium.
(iii) Irreversible reactions do not attain chemical equilibrium.
(iv) The concentration of reactants and products may be different.
(i) It is dynamic in nature.
(ii) The rate of the forward and backward reactions are equal at equilibrium.
(iii) Irreversible reactions do not attain chemical equilibrium.
(iv) The concentration of reactants and products may be different.
3. A single displacement reaction is represented by \(X_{(s)}+2HCl_{(aq)}→XCl_{2(aq)}+H_{2(g)}\). Which of the following(s) could be \(X\).
(i) \(Zn\)
(ii) \(Ag\)
(iii) \(Cu\)
(iv) \(Mg\)
Choose the best pair.
(i) \(Zn\)
(ii) \(Ag\)
(iii) \(Cu\)
(iv) \(Mg\)
Choose the best pair.
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