Answer the following questions: Write balanced equations to represent what happens when. 1. Cu^ 2+ is treated with KI. 2. Acidified potassium dichromate solution is reacted with iron (II) solution. (ionic equation).

1. 2Cu^ 2+ 4I^- 2Cr^ 3+ +7H_2O Cr_2O^ 2- _7+14H^++6e^- 2Cr^ 3+ +7H_2O 2. Fe^ 2+ Fe^ 3+ +e^-] 6 Cr_2O^ 2- _+6Fe^ 2+ +14H^+ 2Cr^ 3+ +6Fe^ 3+ +7H_2+O

Answer the following questions: Write balanced equations to repre…

Question

Answer the following questions:
Write balanced equations to represent what happens when.

$Cu^{2+}$ is treated with KI.
Acidified potassium dichromate solution is reacted with iron (II) solution. (ionic equation).

✓

$2\text{Cu}^{2+}4\text{I}^-\xrightarrow{\ \ \ \ \ \ \ \ }2\text{Cr}^{3+}+7\text{H}_2\text{O}$

$\text{Cr}_2\text{O}^{2-}_7+14\text{H}^++6\text{e}^-\xrightarrow{ \ \ \ \ \ \ \ \ }2\text{Cr}^{3+}+7\text{H}_2\text{O}$

$\text{Fe}^{2+}\xrightarrow{\ \ \ \ \ \ \ \ \ }\text{Fe}^{3+}+\text{e}^-]\times6$

$\text{Cr}_2\text{O}^{2-}_+6\text{Fe}^{2+}+14\text{H}^+\xrightarrow{\ \ \ \ \ \ \ \ \ }2\text{Cr}^{3+}+6\text{Fe}^{3+}+7\text{H}_2+\text{O}$

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Describe the general trends in the following properties of the first series of the transition elements: