Write the Nernst equation and emf of the following cells at 298 K: Mg(s)|Mg2+(0.001M)||Cu2+(0.0001 M

Calculate the standard cell potentials of galvanic cell in which the following reactions take place

Determine the molecular formula of an oxide of iron, in which the mass per cent of iron and oxygen

Depict the galvanic cell in which the reaction Zn(s)+2Ag+(aq) Zn2+(aq)+2Ag(s)

Calculate the concentration of nitric acid in moles per litre in a sample which has a density

How much copper can be obtained from 100 g of copper sulphate (CuSO4 )?

Arrange the following metals in the order in which they displace each other from the solution of the

Calculate the mass of sodium acetate (CH3 COONa) required to make 500 mL of 0.375 molar aqueous

Calculate the amount of carbon dioxide that could be produced when

Determine the empirical formula of an oxide of iron, which has 69.9% iron and 30.1% dioxygen by mass

Write the chemistry of recharging the lead storage battery, highlighting all the materials that

Calculate the mass per cent of different elements present in sodium sulphate (Na2SO4 ).

The density of 3 M solution of NaCl is 1.25 g mL–1. Calculate the molality of the solution.

If a current of 0.5 ampere flows through a metallic wire for 2 hours, then how many electrons would

Calculate the molarity of NaOH in the solution prepared by dissolving its 4 g in enough water to for

A solution of CuSO4 is electrolysed for 10 minutes with a current of 1.5 amperes. What is the mass

The molar conductivity of 0.025 mol L–1 methanoic acid is 46.1 S cm2 mol–1. Calculate its degree

50.0 kg of N2 (g) and 10.0 kg of H2 (g) are mixed to produce NH3 (g). Calculate the amount of NH3

How many moles of methane are required to produce 22g CO2 g after combustion?

Calculate the amount of water g produced by the combustion of 16 g of methane

The conductivity of 0.001028 mol L–1 acetic acid is 4.95 × 10–5 S cm–1. Calculate its dissociation

A compound contains 4.07% hydrogen, 24.27% carbon and 71.65% chlorine. Its molar mass is 98.96 g.

λm for NaCl, HCl and NaAc are 126.4, 425.9 and 91.0 S cm2 mol–1 respectively. Calculate for HAc.

Calculate the molecular mass of glucose (C6 H12 O6 ) molecule.

Calculate λm for CaCl2 and MgSO4 from the following data:

The concentration of sulphide ion in 0.1M HCl solution saturated with hydrogen sulphide

The molar conductivity of KCl solutions at different concentrations at 298 K are given below:

What is the minimum volume of water required to dissolve 1g of calcium sulphate at 298 K?

The electrical resistance of a column of 0.05 mol L–1 NaOH solution of diameter 1 cm and length 50

What is the maximum concentration of equimolar solutions of ferrous sulphate and sodium sulphide

Resistance of a conductivity cell filled with 0.1 mol L–1 KCl solution is 100 Ω. If the resistance

The ionization constant of benzoic acid is 6.46 × 10–5 and Ksp for silver benzoate is 2.5 × 10–13.

The cell in which the following reaction occurs: 2Fe 3 +( aq ) + 2I −( aq ) → 2Fe 2 + ( aq )

Equal volumes of 0.002 M solutions of sodium iodate and cupric chlorate are mixed together.

Calculate the emf of the cell in which the following reaction takes place: Ni(s) + 2Ag+ (0.002 M)

The solubility product constant of Ag2CrO4 and AgBr are 1.1 × 10–12 and 5.0 × 10–13 respectively.

Calculate the potential of hydrogen electrode in contact with a solution whose pH is 10.

Determine the solubilities of silver chromate (Ksp = 1.1 X 10-12), barium chromate

Calculate the pH of the resultant mixtures: 10 mL of 0.2M Ca(OH)2 + 25 mL of 0.1M HCl

Calculate the equilibrium constant of the reaction: Cu(s) + 2Ag+(aq) Cu2+(aq) + 2Ag(s)

Ionic product of water at 310 K is 2 7 × 10–14 What is the pH of neutral water at this temperature?

Represent the cell in which the following reaction takes place Mg(s) + 2Ag+(0.0001M) Mg2+(0.130M)

The ionization constant of chloroacetic acid is 1.35 × 10–3. What will be the pH of 0.1M acid

A 0.02M solution of pyridinium hydrochloride has pH = 3.44. Calculate the ionization constant

How would you determine the standard electrode potential of the system Mg2+|Mg?

The ionization constant of nitrous acid is 4.5 × 10–4. Calculate the pH of 0.04 M sodium nitrite

When 3-methylbutan-2-ol is treated with HBr, the following reaction takes place: Give a mechanism

The pH of 0.1M solution of cyanic acid (HCNO) is 2.34. Calculate the ionization constant of the acid

Show how would you synthesise the following alcohols from appropriate alkenes?

The ionization constant of propanoic acid is 1.32 × 10–5. Calculate the degree of ionization

Write equations of the following reactions:(i) Friedel-Crafts reaction – alkylation of anisole.

The solubility of Sr(OH)2 at 298 K is 19.23 g/L of solution. Calculate the concentrations

Write the mechanism of the reaction of HI with methoxymethane.

If 0.561 g of KOH is dissolved in water to give 200 mL of solution at 298 K. Calculate the

Explain the fact that in aryl alkyl ethers (i) the alkoxy group activates the benzene ring towards

The pH of milk, black coffee, tomato juice, lemon juice and egg white are 6.8, 5.0, 4.2, 2.2 and 7.8

Write the equation of the reaction of hydrogen iodide with:(i) 1-propoxypropane (ii) methoxybenzene

Calculate the hydrogen ion concentration in the following biological fluids whose pH are given below

The ionization constant of dimethylamine is 5.4 × 10–4. Calculate its degree of ionization

How is 1-propoxypropane synthesised from propan-1-ol? Write mechanism of this reaction.