Question

Little Ms. Tammy was predicting the products for a double replacement reaction. She

was given Na2S + HCl for the reactants. Here is what she did.
Na2S + HCl HNa

SCI
Write what did she do wrong. Give the rule she messed up and what are the correct
products?
A. She correctly balanced the chemical equation.
B. She used the correct products for the reaction.
C. She omitted the reactants' names.
D. She wrote incorrect products; the correct products are NaCl + H2S.

Answer 1

Little Ms. Tammy wrote incorrect products for the double replacement reaction between Na2S and HCl. The correct products are NaCl + H2S.

Step-by-step explanation:

Little Ms. Tammy made a mistake when predicting the products for the double replacement reaction. She wrote HNa SCI as the products, which is incorrect. The correct products for the reaction between Na2S and HCl are NaCl + H2S.

She messed up the rule of writing the correct formulas for the products of a double replacement reaction. In a double replacement reaction, the positive ions in the reactants switch places to form the products. So, Na2S, which contains the positive ion Na+ and the negative ion S2-, reacts with HCl, which contains the positive ion H+ and the negative ion Cl-, to produce NaCl and H2S as the correct products.