Question

85 баллов, аы, братаны Состав нитратов лития, бария и железа отражают формулы LiNO3, Ba(NO3)2, Fe(NO3)3. Используя эти формулы, определите значения валентности атомов металлов. Составьте формулы солей, образованных этими металлами и кислотными остатками: а) соляной кислоты; б) сероводородной кислоты; в) фосфорной кислоты;

Answer 1

Решение в прикрепленной фотографии.

Answer 2

 I
LiNO₃    
 II
Ba(NO₃)₂
 III
Fe(NO₃)₃

a) LiCl BaCl₂  FeCl₃
б) Li₂S, BaS, Fe₂S₃
в) Li₃PO₄, Ba₃(PO₄)₂, FePO₄

Answer 3

Valence Values of Metal Atoms in Lithium Nitrate (LiNO3), Barium Nitrate (Ba(NO3)2), and Iron Nitrate (Fe(NO3)3)

The valence values of the metal atoms in lithium nitrate (LiNO3), barium nitrate (Ba(NO3)2), and iron nitrate (Fe(NO3)3) can be determined by analyzing the formulas of these compounds.

1. Lithium Nitrate (LiNO3): - The formula for lithium nitrate is LiNO3. - In this compound, the valence value of the lithium atom (Li) is +1. - The valence value of the nitrogen atom (N) is -3. - The valence value of the oxygen atoms (O) is -2.

2. Barium Nitrate (Ba(NO3)2): - The formula for barium nitrate is Ba(NO3)2. - In this compound, the valence value of the barium atom (Ba) is +2. - The valence value of the nitrogen atom (N) is -3. - The valence value of the oxygen atoms (O) is -2.

3. Iron Nitrate (Fe(NO3)3): - The formula for iron nitrate is Fe(NO3)3. - In this compound, the valence value of the iron atom (Fe) is +3. - The valence value of the nitrogen atom (N) is -3. - The valence value of the oxygen atoms (O) is -2.

Formulas of Salts Formed by These Metals and Acidic Residues

Using the valence values of the metal atoms and the acidic residues, we can determine the formulas of the salts formed by these metals and the acidic residues of various acids.

a) Salt formed with Hydrochloric Acid (HCl): - Hydrochloric acid (HCl) is a strong acid. - When it reacts with a metal, it forms a salt and releases hydrogen gas (H2). - The formula of the salt formed with lithium is LiCl. - The formula of the salt formed with barium is BaCl2. - The formula of the salt formed with iron is FeCl3.

b) Salt formed with Hydrogen Sulfide (H2S): - Hydrogen sulfide (H2S) is a weak acid. - When it reacts with a metal, it forms a salt and releases hydrogen gas (H2). - The formula of the salt formed with lithium is Li2S. - The formula of the salt formed with barium is BaS. - The formula of the salt formed with iron is Fe2S3.

c) Salt formed with Phosphoric Acid (H3PO4): - Phosphoric acid (H3PO4) is a weak acid. - When it reacts with a metal, it forms a salt and releases water (H2O). - The formula of the salt formed with lithium is Li3PO4. - The formula of the salt formed with barium is Ba3(PO4)2. - The formula of the salt formed with iron is FePO4.

Please note that the above formulas are based on the valence values of the metal atoms and the acidic residues.