Guys i really need help in these three problems. If someone could explain how to do this i would appreciate it!
complete and balance the following equations
1. SO3^2- + Cu^2+ --> SO4^2- + Cu^+
2. Cr +Cu^2+ ---> CrO4^2- + Cu^+
3. MnO2 + Ag^+ ---> MnO4^- + Ag
See your post above.
Sure, I can help you with these three problems. These are chemical equations where you need to complete and balance them. Let's go through each of them step by step.
1. The equation is: SO3^2- + Cu^2+ --> SO4^2- + Cu^+
First, let's balance the copper (Cu) atoms. We have 1 copper atom on the left and 1 copper atom on the right, so that's already balanced.
Next, let's balance the sulfur (S) atoms. We have 1 sulfur atom on the left and 1 sulfur atom on the right, so that's also balanced.
Now, let's balance the oxygen (O) atoms. We have 3 oxygen atoms on the left and 4 oxygen atoms on the right. To balance this, we need to add an extra oxygen atom on the left. So the balanced equation is: SO3^2- + Cu^2+ --> SO4^2- + Cu^+ + O2^-
2. The equation is: Cr + Cu^2+ ---> CrO4^2- + Cu^+
First, let's balance the copper (Cu) atoms. We have 1 copper atom on the left and 1 copper atom on the right, so that's already balanced.
Now, let's balance the chromium (Cr) atoms. We have 1 chromium atom on the left and 1 chromium atom on the right, so that's also balanced.
Next, let's balance the oxygen (O) atoms. We have 4 oxygen atoms on the right (in CrO4^2-), so we need to add 4 oxygen atoms on the left. To do this, we can add 2 H2O molecules on the left. So the balanced equation is: Cr + Cu^2+ + 2H2O ---> CrO4^2- + Cu^+
3. The equation is: MnO2 + Ag^+ ---> MnO4^- + Ag
First, let's balance the silver (Ag) atoms. We have 1 silver atom on the left and 1 silver atom on the right, so that's already balanced.
Now, let's balance the manganese (Mn) atoms. We have 1 manganese atom on the left and 1 manganese atom on the right, so that's also balanced.
Next, let's balance the oxygen (O) atoms. We have 2 oxygen atoms on the left (in MnO2) and 4 oxygen atoms on the right (in MnO4^-). To balance this, we need to add 2 extra oxygen atoms on the left. So the balanced equation is: MnO2 + Ag^+ + 2H2O ---> MnO4^- + Ag
I hope this helps! Let me know if you have any more questions.