1). Write balanced equations for each of the following reactions: A. Potassium + water --------- potassium hydroxide + hydrogen gas B. Acetic acid + calcium hydroxide ----------- calcium acetate + water c. Magnesium + copper (II) nitrate --------magnesium nitrate + copper d. Sodium oxide + water ----------- sodium hydroxide E. Zinc sulfide + oxygen gas ---------- zinc oxide + sulfur dioxide F. Potassium hydroxide + aluminum nitrate --------- aluminum hydroxide + potassium nitrate.
(1). Write balanced equations for each of the following reactions:
A. Potassium + water --------- potassium hydroxide + hydrogen gas
B. Acetic acid + calcium hydroxide ----------- calcium acetate + water
c. Magnesium + copper (II) nitrate --------magnesium nitrate + copper
d. Sodium oxide + water ----------- sodium hydroxide
E. Zinc sulfide + oxygen gas ---------- zinc oxide + sulfur dioxide
F. Potassium hydroxide + aluminum nitrate --------- aluminum hydroxide + potassium nitrate.
(2). Write a balanced chemical equation for each of the following reactions:
a. Calcium hydroxide + phosphoric acid ------- calcium phosphate + water
b. Strontium + oxygen gas ------- strontium oxide
c. Magnesium chlorate ------ magnesium chloride + oxygen gas
d. Iron (III) hydroxide + hydrochloric acid ------- iron (III) chloride + water
e. Potassium + oxygen gas -------- potassium oxide
f. Phosphorus + bromine ---------- phosphorous tribromide
(3). Write a balanced chemical equation for each of the following reactions:
a. Iron + oxygen gas ------- iron (III) oxide
b. Sulfuric acid + aluminum hydroxide ---------- aluminum sulfate + water
c. Silver nitrate + barium chloride -------- silver chloride + barium nitrate
d. Copper (I) sulfide + oxygen gas ------- copper + sulfur dioxide
(5). Identify each of the following reactions as a combination, decomposition, single-replace-ment, or double-replacement reaction:
a. 4Fe + 3O2 ----- 2Fe2 O3
b. 2HBr ---- H2 + Br2
c. AgNO3 + KCl ----- AgCl + KNO3
d. Zn + H2SO4 ---- ZnSO4 + H2
e. Mg(CN)2 + 2HCl ----- MgCl 2 + 2HCN
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Balanced equation :-
A chemical equation is said to be balanced if number of atoms of different elements are equal in number on either side of the reaction arrow.
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