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UkoKoshka [18]
3 years ago
5

CuO+H₂ → Cu +H₂O redox equation

Chemistry
2 answers:
Agata [3.3K]3 years ago
8 0

Answer:

Cu   H₂O

Explanation:

CuO + H₂  -----> Cu + H₂O

Oxidation : Gaining of oxygen OR Losing of hydrogen

Reduction : Gaining of Hydrogen OR Losing of Oxygen

Here ,

CuO gets reduced [ it loses oxygen ] and become Cu

H₂ gets oxidized  [ it gains oxygen ] and becomes H₂O

Substance that gets oxidised = H₂

Substance that gets reduced = CuO

Also ,

Oxidising agent = substance that gets reduced = CuO

Reducing agent = substance that gets oxidized = H₂

Allisa [31]3 years ago
8 0

Answer:

Cu⁺² + 2e⁻ → Cu

Explanation:

A redox reaction is the half-equation where the element is reduced (gains electrons).

Compounds always have to have oxidation numbers that add to 0.

Oxygen's oxidation number is -2.

Stand alone elements always have an oxidation number of 0.

Reactants

Because Copper's oxidation number + Oxygen's oxidation number = 0, and Oxygen's oxidation number = -2, we know Copper's oxidation number is +2.

H₂ has to have a net oxidation of 0, so Hydrogen's oxidation number is 0.

Products

Copper's oxidation number is 0 because it's a standalone element.

2 * Hydrogen's oxidation number + Oxygen's oxidation number = 0, so that means Oxygen's oxidation number is -2, and Hydrogen's is +1.

Because Copper's oxidation number went down from +2 to 0, that means it gained electrons and therefore was reduced. So your answer is:

Cu⁺² + 2e⁻ → Cu

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For the following reaction, 13.1 grams of glucose (C6H12O6) are allowed to react with 10.6 grams of oxygen gas. glucose (C6H12O6
mart [117]

Answer:

There will be formed 14.58 grams of CO2

O2 is the limiting reagent

There will remain 3.151 grams of glucose

Explanation:

Step 1: Data given

Mass of glucose = 13.1 grams

molar mass of glucose 180.156 g/mol

Mass of oxygen = 10.6grams

molar mass of oxygen = 32 g/mol

<u>Step 2</u>: The balanced equation

C6H12O6 + 6 O2 → 6H2O + 6CO2

<u>Step 3</u>: Calculate moles of glucose

Moles of glucose = mass glucose / molar mass glucose

Moles of glucose = 13.1 grams / 180.156 g/mol

Moles of glucose = 0.0727 moles

Step 4: Calculate moles of oxygen

Moles O2 = 10.6 grams / 32 g/mol

Moles O2 = 0.33125 moles

Step 5: Calculate the limiting reactant

For 1 mol of glucose , we need 6 moles of O2 to produce 6 moles of H2O and 6 moles of CO2

Oxygen is the limiting reactant. It will completely be consumed ( 0.33125 moles).

Glucose is in excess. There will be consumed 0.33125/6 = 0.05521 moles

There will remain 0.0727 - 0.05521 = 0.01749 moles

This is 0.01749 moles * 180.156 g/mol = 3.151 grams

Step 6: Calculate moles of CO2

For 1 mol of glucose , we need 6 moles of O2 to produce 6 moles of H2O and 6 moles of CO2

For 0.33125 moles of O2 we'll get 0.33125 moles of CO2 produced

Step 7: Calculate mass of CO2

Mass of CO2 = moles CO2 * molar mass CO2

Mass CO2 = 0.33125 moles * 44.01 g/mol

Mass CO2 = 14.58 grams

7 0
3 years ago
Calculate the mass m of 6.50 moles n of kbr m
crimeas [40]

Answer:

773.51495 grams

Explanation:

1 moles KBr to grams = 119.0023 grams

6.5*119.0023 = 773.51495 grams

8 0
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