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In this equation, CrO42-(ag) + H2O(l) → CrO2 (ag) + OH-(ag), the change in oxidation number...
help with these 3 please? 18. Of the reactions below, which one is a precipitation reaction?...
help with these 3 please?
18. Of the reactions below, which one is a precipitation reaction? a. NH4Cl → NH3 + HCI b. 2Mg + O2 + 2MgO c. 2N2 + 3H2 + 2NH3 d. 2CH4 +402 2002 + 4H20 e. Ca(NO3)2 + Na2S → CSS(s) + 2NaNO3 19. In the equation, CrO42(aq) + H2O(l) → CrO2(aq) + OH-(ag), the change in the oxidation number of the chromium atom is a. decrease by six units b. decrease by three units...
14 Which one of the equation ons helow represents that happens when Niis dissolved in water? | Hà N | | | | | | |...
14 Which one of the equation ons helow represents that happens when Niis dissolved in water? | Hà N | | | | | | | | NIHOONIS NON + OH- NHÀ | | | | |-- VỊ | | | | | | * | | | 15 What is the change in the hange in the oxidation number of chromium in the following K Cr:07 - Cr(SO:)3 a increase by three units h increase by four units decrease...
Consider the following reaction in basic solution: Cr(OH)3 + ClO- --> Cl2 + CrO42- Which of the...
Consider the following reaction in basic solution: Cr(OH)3 + ClO- --> Cl2 + CrO42- Which of the following statements is/are correct? 1. The oxidizing agent is Cr(OH)3. 2. The oxidation number of the atom being reduced changes from 0 to -2. 3. The oxidation number of the atom being oxidized changes from +3 to +6. 4. When the equation is balanced, the species OH- appears on the right hand side of the equation. A. 3 only B. 3 & 4 only...
Balance by Change in Oxidation Number Mo(OH)4- + OH- + H2O2 -> MoO42- + H2O
Balance by Change in Oxidation Number Mo(OH)4- + OH- + H2O2 -> MoO42- + H2O
1. For the process H2O(g) → H2O(l) at 105°C the signs on AG, AH, and AS...
1. For the process H2O(g) → H2O(l) at 105°C the signs on AG, AH, and AS are a)-, t, + b)t, -, - c) +, +, + d) +, t, - e)-, -, - 2. For the process H2O(l) → H2O(s) at -5°C the signs on AG, AH, and AS are a)-, +, + b) +, -, - c) +, +, + d) +, +, - e)-,-,- 3. For the process H2O(s) → H2O(l) at +5°C the signs on AG,...
Write the oxidation number for each atom Please help me solve these 6. I don't know...
Write the oxidation number for each atom
Please help me solve these 6. I don't know how to do
them.
1. Write the oxidation number for each atom: a. CrO42- b. HC104 d. Sg c. NF3 e. P2O5 g. CHC13
An unbalanced redox equation in acid medium is shown below. Fe + CrO42–----> Fe3+ + Cr2O3...
An unbalanced redox equation in acid medium is shown below. Fe + CrO42–----> Fe3+ + Cr2O3 After balancing the equation using ionic half reaction method, a Fe + b CrO42– + 10H+ ----> c Fe3+ + d Cr2O3 + e H2O What is the value of a ?
When the following oxidation–reduction reaction in basic solution is balanced, what is the lowest whole-number coefficient...
When the following oxidation–reduction reaction in basic solution is balanced, what is the lowest whole-number coefficient for OH–, and on which side of the balanced equation should it appear? Cr2O3(s) → Cr(OH)2(aq) + CrO42–(aq) a. 2, reactant side b. 10, product side c. 4, product side d. 4, reactant side e. 2, product side The answer is a, but I dont know how to get to the answer.
In addition to mass balance, oxidation-reduction reactions must be balanced such that the number of electrons...
In addition to mass balance, oxidation-reduction reactions must be balanced such that the number of electrons lost in the oxidation equals the number of electrons gained in the reduction. This balancing can be done by two methods: the half-reaction method or the oxidation number method. The half-reaction method balances the electrons lost in the oxidation half-reaction with the electrons gained in the reduction half-reaction. In either method H2O(l), OH−(aq), and H+(aq) may be added to complete the mass balance. Which...
Reduction refers to __________ a. a decrease in oxidation number. d. a decrease in the atomic...
Reduction refers to __________ a. a decrease in oxidation number. d. a decrease in the atomic number. b. an increase in oxidation number. e. loss of mass. c. a gain in the number of protons.
help with these 3 please?
18. Of the reactions below, which one is a precipitation reaction? a. NH4Cl → NH3 + HCI b. 2Mg + O2 + 2MgO c. 2N2 + 3H2 + 2NH3 d. 2CH4 +402 2002 + 4H20 e. Ca(NO3)2 + Na2S → CSS(s) + 2NaNO3 19. In the equation, CrO42(aq) + H2O(l) → CrO2(aq) + OH-(ag), the change in the oxidation number of the chromium atom is a. decrease by six units b. decrease by three units...
14 Which one of the equation ons helow represents that happens when Niis dissolved in water? | Hà N | | | | | | | | NIHOONIS NON + OH- NHÀ | | | | |-- VỊ | | | | | | * | | | 15 What is the change in the hange in the oxidation number of chromium in the following K Cr:07 - Cr(SO:)3 a increase by three units h increase by four units decrease...
1. For the process H2O(g) → H2O(l) at 105°C the signs on AG, AH, and AS are a)-, t, + b)t, -, - c) +, +, + d) +, t, - e)-, -, - 2. For the process H2O(l) → H2O(s) at -5°C the signs on AG, AH, and AS are a)-, +, + b) +, -, - c) +, +, + d) +, +, - e)-,-,- 3. For the process H2O(s) → H2O(l) at +5°C the signs on AG,...
Write the oxidation number for each atom
Please help me solve these 6. I don't know how to do
them.
1. Write the oxidation number for each atom: a. CrO42- b. HC104 d. Sg c. NF3 e. P2O5 g. CHC13
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