Question
Which of the following is an example of a double replacement reaction?(2 points)
Responses
C + O2
→CO2
C + O 2 →CO 2
Na2
S + CaCl2
→CaS + 2NaCl
Na 2 S + CaCl 2 →CaS + 2NaCl
Mg + HCl→MgCl2
+ H2
Mg + HCl→MgCl 2 + H 2
2H2
+ O2
→2H2
O
Responses
C + O2
→CO2
C + O 2 →CO 2
Na2
S + CaCl2
→CaS + 2NaCl
Na 2 S + CaCl 2 →CaS + 2NaCl
Mg + HCl→MgCl2
+ H2
Mg + HCl→MgCl 2 + H 2
2H2
+ O2
→2H2
O
Answers
GPT-4o mini
The example of a double replacement reaction from the options provided is:
**Na2S + CaCl2 → CaS + 2NaCl**
In a double replacement reaction, two compounds exchange ions or elements to form two new compounds. In this case, sodium (Na) and calcium (Ca) are exchanging places with sulfur (S) and chloride (Cl).
**Na2S + CaCl2 → CaS + 2NaCl**
In a double replacement reaction, two compounds exchange ions or elements to form two new compounds. In this case, sodium (Na) and calcium (Ca) are exchanging places with sulfur (S) and chloride (Cl).