For questions 22 – 24, write an equation for the reaction of hydrogen chloride and sodium sulfide to produce hydrogen sulfide with sodium chloride.
22. Show the formulas of the reactants.
23. Show the formulas of the products.
24. Write the balanced the equation for this reaction.

1. The reactants are HCl and Na2S

2. The products are H2S and NaCl

3. The balance equation is given below:

2HCl + Na2S —> H2S + 2NaCl

chemical digestion occurs in the stomach were hcl and pepsin forms chyme, the mouth in which salivary amylase breaks down starch to form bolus, and the small intestine specifically the duodenum.

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