multiple choice\nquestion 1\nwhat coefficients are needed to balance the following chemical…

multiple choice\nquestion 1\nwhat coefficients are needed to balance the following chemical equation?\n_agno₃(aq)+_cacl₂(aq)→_agcl(s)+_ca(no₃)₂(aq)\na 2,0,2,0\nb 2,1,2,1\nc 3,2,1,6\nd 1,2,2,1

multiple choice\nquestion 1\nwhat coefficients are needed to balance the following chemical equation?\n_agno₃(aq)+_cacl₂(aq)→_agcl(s)+_ca(no₃)₂(aq)\na 2,0,2,0\nb 2,1,2,1\nc 3,2,1,6\nd 1,2,2,1

Answer

Answer:

B. 2,1,2,1

Explanation:

Step1: Balance nitrate ions

There are 2 nitrate ions in $Ca(NO_3)_2$, so we need 2 moles of $AgNO_3$. So coefficient of $AgNO_3$ is 2.

Step2: Balance silver ions

Since we have 2 silver ions from 2 moles of $AgNO_3$, the coefficient of $AgCl$ is 2.

Step3: Balance calcium ions

There is 1 calcium ion in $CaCl_2$ and 1 in $Ca(NO_3)_2$, so coefficient of $CaCl_2$ and $Ca(NO_3)_2$ is 1.