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Acids, Bases and Salts — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceAcids, Bases and Salts5 Marks
Question
Write word equations and then balanced equations for the reaction taking place when–
  1. Dilute sulphuric acid reacts with zinc granules.
  2. Dilute hydrochloric acid reacts with magnesium ribbon.
  3. Dilute sulphuric acid reacts with aluminium powder.
  4. Dilute hydrochloric acid reacts with iron filings.
✓

Answer

a. Zinc + Sulphuric acid Zinc sulphate + Hydrogen
$Zn+H_2 SO_4 \rightarrow ZnSO_4+H_2$
b. Magnesium + Hydrochloric acid magnesium chloride + Hydrogen gas
$Mg+2 HCl \rightarrow MgCl_2+H_2$
c. Aluminum + Sulphuric acid Aluminum sulphate + Hydrogen gas
$2 Al+3 H_2 SO_4 \rightarrow Al_2\left(SO_4\right)_3+3 H_2$
d. Iron + Hydrochloric acid Iron chloride + Hydrogen
$Fe+2 HCl \rightarrow FeCl_2+H_2$

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