Which of the following metals do not react with hot aqueous acid? a) Ag b) Mg c) Ca d) Zn

Q: Considering the activity series of increasing reactivities (Cu < Sn < Fe < n < Mg), which metal(s)…

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Q: When a strip of Mn is placed in a solution of Cr(NO3)3 , a deposit of chromium metal forms and…

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Q: Determine the electronic configuration and orbital diagram for the common oxidation states of…

A: Determine electronic configuration as well as orbital diagram --

Q: What are the three ingredients used in a blast furnace to make iron? Which one of these is the…

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Q: Which of the following materials can oxidize copper without oxidizing silver? a) F– b) I– c) I2…

A: Answer:- This question is answered by using the simple concept of electrode potential. More positive…

Q: copper can be extracted by hydrometallurgy but not zinc. explain.

A: The reduction potential of Zinc is lower than that of copper. In hydrometallurgy, in order to…

Q: What is the oxidation number of the Chromium atom in K2Cr2O7?

A: Oxidation number is the number of electrons gained or lost by an element.

Q: Fill in the products to complete the reaction below showing how coke (a form of elemental carbon)…

A: Given Reaction  C + CO2→

Q: 1) Balance the following reaction for acidic and then basic conditions. VO2+ + Zn --> VO2+ + Zn2+

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Q: use the table standard reduction potentials located in the table to predict if a reaction will occur…

A: In this question, we will predicted that Reaction will occur or not when Mg metal put into aqueous…

Q: Copper can be purified using an electrochemical cell. Explain the purifying process using an…

A: Impure copper contains copper along with other impurities.  We can separate pure copper from impure…

Q: &gt;List the name and formula of one important mineral source for each of these metals: Fe, Hg, V,…

A: Rock rich in a particular mineral is known as ore. The mineral source for a metal can be a chloride,…

Q: &gt;List the name and formula of one important mineral source for each of these metals: Ti, Zn, U,…

A: Titanium is mainly obtained from rutile, ilmenite and anatase.The formulas are:

Q: Which one of these metals reacts with an acid to produce hydrogen gas? Hg, Cr, or Pt?

A: We can solve this problem by knowing the activity series of metals.  The most reactive  metal can…

Q: Use the half-reaction method to valence the following: Cr 3+ + ClO - = CrO4 2- + Cl (basic…

A: According to ion electron method Chromium shows following conversion - Cr+3→CrO4-- to balance the…

Q: Use the half-reaction method to valence the following: MnO + PbO2 = MnO4 2- + Pb 2+ (acidic…

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Q: What are the oxidation numbers of aluminum in Al(s) and Al2O3

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Q: Question six

A: The half cell reactions are as follows: Overall reaction is: Calculation of the standard reduction…

Q: Consider the formation of gibbsite from dissolved aluminum as depicted below: Al3+     +        OH-…

A: Chemical reaction- It consists of reactant (starting material) and products (substances formed in…

Q: Describe the effects of adding Cr to steel and give a use for chromium–steel alloys.

A: The effects of adding Cr to steel are :It strongly increases the hardness and toughness of steel.It…

Q: What is the oxidation number of the chromium atom in K7Cr2O7?

A: Given-&gt; I think there is  K2Cr2O7

Q: What is the oxidation number of oxygen in Fe(CH3COO)2?

A: Answer:Charge present on the atom in a specie when bond is assumed to be completely formed due to…

Q: Hard water is a problem for many residential and commercial applications. How can hard water be…

A: Several methods of water softening have emerged in an attempt to overcome the challenges posed…

Q: What is the oxidation state of the chromium atom K2CrO4?

A: The important points related to oxidation state are :The sum of overall oxidation state of a neutral…