Explore topic-wise InterviewSolutions in .

Copper is used to make hot water tanks and not steel this is because the iron (in steel) is more reactive than then copper also it react with hot steam to produce ferrosoferric oxide. Due to which the body of tank will become weaker and weaker. While copper does not react with hot water.

Copper is used to makehot water tanks and not steel this is because the iron (in steel) is more reactive than thencopperalso it react with hot steam toproduceferrosoferric oxide.

I want atleast 3 reasons,can u provide me

Copper is a better conductor which immediately puts it above steel.Secondly, it's more durable and not as likely to rust or have any other issues. Plus, some of the properties that copper contains make it a more ideal metal to use.

Thnku ji

I got same answer when I solved this question ,just ask to you for confirmation...Thanking You...

E1cB Mechanism

E1cB mechanism (E-elimination, 1cB-first order with respect to conjugate base) is one of the three limiting mechanisms of1,2-elimination. It is a two-step mechanism.

Step 1:

*Only theleaving groupand one beta hydrogen are shown for clarity.

Step 2:

Step two is first order and its reactant is the conjugate base of the substrate, hence the notation 1cB.

A 1,2-eliminationoccurringvia E1cB mechanism is called and E1cB reaction. Stand-alone E1cB reactions are not common, and they have a complex rate law, meaning that the rate-limiting step is the second step.

However, in the most common E1cB reactions, the base is ‾OH and thesolventis water, in which case the rate law simplifies to

rate = k[substrate][base]

Please visit our blog for more information related to examination and study materials.https://www.scholr.com/blog/

Define critical temperatureof a gas. It is the highesttemperatureat which a gas can be liquefied by increasing pressure.

Lewis base is a substance that can donate an electrone pair.Those species having a lonepair always forms Lewis base so H-is a Lewis base as it possess a lone pair and can donate it.

Because it is highly reactive, and spontaneously combusts when exposed to the air.

because it is highly reactive with air so it is stored in water

Lewis base is a substance that can donate an electron pair.those species that have a lone pair always form Lewis base so H^- is a lewis base as it possess a lone pair and can donate it.

Hit like if you find it useful

6x-5x=01x=0x=0 is the answer

the correct answer is C

Option C is the right answer

option c. is the right answer

operation c is the right answer

option 3 is the correct answer is the

h=20 % c=80% I not the answer

Not sure but the answer might be the 2nd option

1/13 😁😁😁😁😁😁😁😁😁😁😁

how can calculate the reaction in answer

how y/4 in reaction

Theheat of combustion of propane, C3H8, as described in theequationC3H8(g) + 5O2(g) → 3CO2(g) + 4H2O(l), is –2220 kJ mol-1 and the heats offormationof carbon dioxide gas and water liquid are –393.5 kJ mol-1 and -285.8 kJ mol-1 respectively.Calculate the heat of formation of propane.

upper answer the right answer

1

2

Calculate enthalpy of formation for benzene, C6H6, from the following data.2 C6H6(l) + 15 O2(g) 12 CO2(g) + 6 H2O(l)

Enthalpy of combustion of C6H6 = -6534 kJEnthalpy of formation (H2O) = -285.8 kJEnthalpy of formation (CO2) = -393.5 kJ

delta H for the reaction = [sum of heat of formation for products] - [sum of heat of formation for reactants]

(-6534) = [(12)(-393.5) + (6)(-285.8)] - (2X)

(-6534) = -6436.8 - 2X

2X = 97.2

X = +48.6 kJ, which is the heat of formation for benzene.

Cinnabar also known as HgS is termed as the mercury ore. Mercury can be obtained from cinnabar by heating the cinnabar ore in a current of air and condensing the mercury vapour formed. Due to its relatively low boiling point mercury can be easily purified by vacuum distillation. The reaction of mercury sulphide with oxygen is shown below:

HgS + O2 = Hg + SO2

This process is also called Roasting. However Mercury can be obtained from other reactions too. For ex:

HgS + Fe = Hg + FeS

4HgS + 3 CaO = 4Hg + 3CaS + CaSO4

Ans :- Cinnabar (HgS) is an ore of mercury.

when Cinnabar, HgS is heated in air, it is first converted into HgO, HgO is then reduced to Hg on further heating.

Cinnabar (HgS) is an ore of Mercury.

The metals being less reactive can be obtained by reducing their oxides to metals by heating alone.

So, when Cinnabar is heated in air, it first changes into its oxide and then into mercury metal.

Zincisextractedthrough carbon reduction of the oreZinc blende(ZnS) ore by specially designed blast furnaces. Ore forms froth and comes to the surface, and impurities are left behind in water. Roasting - The concentrated ore is heated in a blast furnace at 900° C whereZincsulphide is converted toZincoxide

Faraday's First Law of Electrolysis. The mass of the substance (m) deposited or liberated at any electrode is directly proportional to the quantity of electricity or charge (Q) passed.

A is the best answer

aluminum is the best answer

zinc is the right answet its found in zinc carbonate and zinc sulphide

(c)zinc is the correct answer

zinc is the right answer

zinc is correct answer

Zinc Is Correct Answer Of This Question

please tell answer fastly

4) is correct answer

4) 0.237 is the right answer of the following

First toluene is converted to benzoic acid(by KMnO4/OH-). Then it undergoes acid catalysed esterification to form phenyl benzoate. Then, on addition of NaOH, it gives phenol and sodium benzoate.

In case of substituted aromatic compounds, the functional groups already present directs the next incoming group to a particular position in the aromatic ring. It is called directive influence of the group already attached to the benzene ring. -CH3 group is an ortho and para directing group.

Here Magnesium get oxidized.

The equation for the above reaction is:

2 Mg(s) + O2(g) = 2 MgO(s)

I don't know I don't know i

It is a displacement reaction.

Displacement reaction is a chemical reaction in which a more reactive element displaces a less reactive element from its compound. Both metals and non-metals take part in displacement reactions.

is called rust.

Rust is aniron oxide, a usually redoxideformed by the redox reaction ofironand oxygen in the presence of water or air moisture. ... Rust consists ofhydrated iron(III)oxidesFe2O.3· nH2O andiron(III)oxide-hydroxide (FeO(OH), Fe(OH)3).

It can be converted into anhydrouscopper sulphatewhenheatedstrongly. Whenheated, it loses two water molecules at ~63°C followed by two more at ~109°C and the final water molecule at ~200°C and turns to white coloured anhydrouscopper sulphate. This above process can be reversed.

A is R-Br (Also called Hunsdicker Reaction). B is R-OH. (Due to aqueous KOH).

1 it undergoes hydrolysis & forms n- butanol & KCl2 it undergoes dehydrogenation forms but-1-ene + KBr+ H2O

Chemically, rust is hydrated ferric oxide (Fe2O3.nH2O)

where is the answer

2CH3​-CO-Cl + (CH3)2Cd---> 2 CH3-CO-CH3+CdCl2ACETYL CHLORIDE REACTS WITH DIMETHYLCADMIUM TO GIVE PROPANONE AND CADMIUM CHLORIDE

When ethyl bromide reacts with aqueous KOH, it undergoes hydrolysis. This occurs through the SN 2 mechanics since the substrate is a primary carbon. The OH group from KOH substitutes the Br group from ethyl bromide. The by product is KBr.

When ethyl bromide reacts with alcoholic KOH, it undergoes beta elimination . The lone pair on O in OH attracts the hydrogen on the beta carbon( the carbon next to the carbon which has the bromide group) and the potasssium cation attracts the bromide group. The product is ethene and the by products are water and KBr.

It is known that remarkable quantities of aniline besides other products are formed by treating liquid chlorobenzene with ammonia at elevated temperatures and pressures

All tertiary alkyl halides undergo substitution by SN1 mechanism.

The generalized mechanism usingtert-butyl chloride as the starting material is given below:

The bond between aluminium and oxygen is more stronger for carbon to reduce oxygen from it hence carbon cannot be used a reducing agent . To reduce Alumina (Al²O³) so as to obtain aluminium, electrolytic reduction is done, with the help of electricity ,aluminium and oxygen are separated and Aluminium is obtained at cathode.

bayers meathodcathode:2Al +6e->2Al