which is the balanced equation for v₂o₅ + cas → cao + v₂s₅?\no v₂o₅ + cas → cao + v₂s₅\no 5v₂o₅ + 5cas →…

Explanation:

Step1: Count atoms on both sides

On the left - hand side of the unbalanced equation $V_2O_5+CaS\rightarrow CaO + V_2S_5$, we have 2 V, 5 O, 1 Ca, 1 S. On the right - hand side, we have 2 V, 1 O, 1 Ca, 5 S.

Step2: Balance oxygen and sulfur

To balance the oxygen atoms, we need 5 moles of CaO on the right - hand side as there are 5 oxygen atoms in $V_2O_5$. To balance the sulfur atoms, we need 5 moles of CaS on the left - hand side as there are 5 sulfur atoms in $V_2S_5$.

Step3: Check other atoms

After adding coefficients, for the equation $V_2O_5 + 5CaS\rightarrow5CaO+V_2S_5$, we have 2 V, 5 O, 5 Ca, 5 S on both sides.

Answer:

D. $V_2O_5 + 5CaS\rightarrow5CaO + V_2S_5$