A) Balance the following equations:i) PbCl2 + AgNO3 <----> AgCl + Pb (NO3) 2
ii) AlCl3 + NH4OH <----> Al(OH)3 + NH4Cl
iii) FeCl3 + Ca(OH)2 <----> CaCl2 + Fe(OH)3
iv) Pb(ClO3)2 + K2SO4 <----> PbSO4 + KClO3
v) Na + HOH <----> NaOH + H2
vi) Zn + HCl <----> ZnCl2 + H2
vii) Al + AgCH3COO <----> Al(CH3COO)3 + Ag
viii) MgO + HNO3 <----> Mg (NO3)2 + H2O
ix) MnO2 <----> Mn3O4 + O2
b) Why is it incorrect to alter the chemical formula when balancing an equation?

Answers

Answer 1

Answer: A-
i) $PbCl_2 + 2AgNO_3 = 2AgCl + Pb(NO_3)2$
ii) $AlCl_3 + 3NH_4OH = Al(OH)_3 + 3NH_4Cl$
iii) $2FeCl_3 + 3Ca(OH)_2 = 3CaCl_2 + 2Fe(OH)_3$
iv) $Pb(ClO_3)_2 + K_2SO_4 = PbSO_4 + 2KClO_3$
v) $2Na + 2HOH = 2NaOH + H_2$
vi) $Zn + 2HCl = ZnCl_2 + H_2$
vii) $Al + 3AgCH_3COO = Al(CH_3COO)_3 + 3Ag$
viii) $MgO + 2HNO_3 = Mg(NO_3)_2 + H_2O$
ix) $3MnO_2 = Mn_3O_4 + O_2$

B- Because chemical formula has its own unique set of elements and subscripts

Hope this Helps :)

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Final answer:

A single replacement reaction is a type of chemical reaction in which one element replaces another in a compound. A common example of this is when zinc replaces hydrogen in hydrochloric acid to create zinc chloride and hydrogen gas.

Explanation:

A single replacement reaction is a chemical reaction in which one element replaces another element in a compound. This type of reaction can be represented as follows: A + BC -> AC + B. In this equation, 'A' is the single element that replaces 'B' in the compound 'BC', forming the new compound 'AC' and releasing 'B' as a separate element.

For example, one common single replacement reaction occurs when zinc replaces hydrogen in hydrochloric acid to form zinc chloride and hydrogen gas. This reaction can be written as: Zn + 2HCl -> ZnCl2 + H2.

Learn more about Single Replacement Reaction here:

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