question 6

what is the oxidation state of carbon in the compound $\text{na}_2\text{c}_3\text{o}_4$?

if the oxidation state is positive just give the number (e.g. enter 1 for +1)

if the oxidation state is negative give the negative number (e.g. enter -1 for -1)

if the oxidation state is zero, enter 0

Question

question 6

what is the oxidation state of carbon in the compound $\text{na}_2\text{c}_3\text{o}_4$?

if the oxidation state is positive just give the number (e.g. enter 1 for +1)

if the oxidation state is negative give the negative number (e.g. enter -1 for -1)

if the oxidation state is zero, enter 0

Accepted Answer

{ "quality": "clear", "question_count": 1, "skills_matched": [ "step_cot", "blank_filling_formatter", "explain_then_answer", "quick" ], "needs_drawing": false, "concepts_used": [], "new_concepts": [ "Oxidation State Rules", "Oxidation Number Calculation" ], "current_concepts": [ "Oxidation State Rules", "Oxidation Number Calculation" ] } ## Identify known oxidation states $$ \begin{aligned} &\text{Oxidation state of Na (Group 1 alkali metal)} = +1 \ &\text{Oxidation state of O (usually in compounds)} = -2 \end{aligned} $$ ## Set up the charge balance equation $$ \begin{aligned} &2(\text{Na}) + 2(\text{C}) + 4(\text{O}) = 0 \ &2(+1) + 2(x) + 4(-2) = 0 \end{aligned} $$ ## Solve for the oxidation state of carbon $$ \begin{aligned} &2 + 2x - 8 = 0 \ &2x - 6 = 0 \ &2x = 6 \ &x = 3 \end{aligned} $$ What is the oxidation state of carbon in the compound $\text{Na}_2\text{C}_2\text{O}_4$? If the oxidation state is positive just give the number (e.g. enter 1 for +1) If the oxidation state is negative give the negative number (e.g. enter -1 for -1) If the oxidation state is zero, enter 0 3 { "subject": "Natural Science", "question_type": "Fill-in-the-blank", "knowledge_point": [ "Natural Science", "Chemistry", "Oxidation Number Calculation" ] }

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Question

Explanation:

Identify known oxidation states

Set up the charge balance equation

Solve for the oxidation state of carbon

Answer: