Question

Гидрокарбонат натрия + ca co3+ hcl

Answer 1

$2NaHCO_3 + CaCO_3+4HCl=2NaCl+CaCl_2+3CO_2+3H_2O$

1) Определим количество вещества HCl
C = n/V  =>  n = C * V = 0,1 * 0,5 = 0.05 моль

2) Определим количества вещества NaHCO3 и CaCO3
n(NaHCO3) = 2 * 0,05/4 = 0,025 моль
n(CaCO3) = 1 * 0,05/4 = 0,0125 моль

3) Определим массовые доли NaHCO3 и CaCO3
M(NaHCO3) = 23 + 1 + 12 + 16 * 3 = 84 моль
m(NaHCO3) = 84 * 0,025 = 2,1 г
W%(NaHCO3) = 2,1/3,5 * 100 % = 60 %

M(CaCO3) = 40 + 12 + 16 * 3 = 100 моль
m(CaCO3) = 100 * 0,0125 = 1,25 г
W%(CaCO3) = 1,25/3,5 * 100 % = 35,7 %

Answer 2

Hydrogen Carbonate Sodium (NaHCO3) and Calcium Carbonate (CaCO3) Reaction with Hydrochloric Acid (HCl)

When hydrochloric acid (HCl) reacts with hydrogen carbonate sodium (NaHCO3) and calcium carbonate (CaCO3), several chemical reactions occur. Let's explore these reactions in detail.

1. Reaction between Hydrochloric Acid and Hydrogen Carbonate Sodium: - The reaction between hydrochloric acid and hydrogen carbonate sodium can be represented by the following equation: NaHCO3 + HCl → NaCl + H2O + CO2. - In this reaction, hydrochloric acid (HCl) reacts with hydrogen carbonate sodium (NaHCO3) to produce sodium chloride (NaCl), water (H2O), and carbon dioxide (CO2).

2. Reaction between Hydrochloric Acid and Calcium Carbonate: - The reaction between hydrochloric acid and calcium carbonate can be represented by the following equation: CaCO3 + 2HCl → CaCl2 + H2O + CO2. - In this reaction, hydrochloric acid (HCl) reacts with calcium carbonate (CaCO3) to produce calcium chloride (CaCl2), water (H2O), and carbon dioxide (CO2).

It's important to note that the reaction between hydrochloric acid and hydrogen carbonate sodium or calcium carbonate is an example of an acid-base reaction. The hydrochloric acid acts as the acid, while the hydrogen carbonate sodium or calcium carbonate acts as the base.

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