SELECT * FROM question_mgmt as q WHERE id=3498 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=9 AND subId=16 AND chapterId=252 and ex_no='4' AND status=1 ORDER BY CAST(question_no AS UNSIGNED) CBSE Free NCERT Solution of 10th science Chemical reaction and Equation write the balanced chemical equation for the follo

Question:

Write the balanced chemical equation for the following and identify the type of reaction in each case.

(a) Potassium bromide(aq) + Barium iodide(aq) → Potassium iodide(aq) + Barium bromide(s)
(b) Zinc carbonate(s) → Zinc oxide(s) + Carbon dioxide(g)
(c) Hydrogen(g) + Chlorine(g) → Hydrogen chloride(g)
(d) Magnesium(s) + Hydrochloric acid(aq) → Magnesium chloride(aq) + Hydrogen(g

Answer:

(a)  2KBr  +  BaI2  →  2KI  +  BaBr2 
Type of reaction: Double displacement reaction. Because the cation K+ and Ba2+ have exchanged their anions Br- and SO42- .

(b)  ZnCO3   →   ZnO  +  CO2
Type of reaction: Decomposition reaction. Because in this reaction single reactant break down into two product

(c)  H2  +  Cl2   →   2HCl
Type of reaction: Combination. Because in this reaction two reactant combine into single product.

(d)  Mg  +  2HCl   →   MgCl2  +  H2
Type of reaction : disclacement reaction because H in HCl has been displaced by Mg.


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