Which of the following is formed on dehydration of formic acid with concentrated H2SO4?

Concentrated sulphuric acid has a highly dehydrating property and also it acts as oxidising agent. But in the above reaction it acts as a dehydrating agent, by dehydrating formic acid to form Carbon monoxide.

When formic acid and oxalic acid is treated with conc H2SO4?

Carboxylic acids on being treated with concentrated sulphuric acid get dehydrated. Dehydration of formic acid will release carbon monoxide gas whereas dehydration of oxalic acid will release two gases, carbon monoxide and carbon dioxide.

What happens when NAI is heated with H2SO4?

As we can see, sodium iodide reacts with sulphuric acid to give fumes of hydrogen iodide along with the major production of iodine due to which the color of the solution changes to red.

When bromide is heated with conc H2SO4 the gas liberated is?

Hint: KBr is an alkali metal halide. When it reacts with concentrated acid, we expect the halide to be liberated. Thus, the reddish-brown coloured gas we can see is of bromine.

What are products formed when Oxalic acid is dehydrated with conc H2SO4?

Concentrated sulphuric acid works as a dehydrating agent, so it discards water molecules from the compound and thus dehydrates the compound. So, heating of oxalic acid in presence of concentrated sulphuric acid produces carbon monoxide gas, carbon dioxide gas, and a water molecule.

What products will formed when methanoic acid warmed with conc sulphuric acid?

Methanoic acid, the first member of carboxylic acid series, when warmed with concentrated sulphuric acid decompose in the following way and evolve carbon monoxide.

How is oxalic acid converted to formic acid?

Formic acid on reaction with NaOH gives Sod. Formate, which on being heated at 400 deg C yields sodiun oxalate, which on further being treated with dil. HCL yields Oxalic acid.

Which gas is evolved when NaCl is heated with H2SO4 in presence of MnO2?

(i) When NaCl is heated with sulphuric acid in the presence of MnO2, it produces MnCl2 and NaHSO4. (ii) When chlorine gas is passed into a solution of NaI in water, sodium chloride is formed with liberation of Cl2 gas.

Which gas is produced when NaCl is heated with conc H2SO4?

The reaction of sodium chloride and sulphuric acid produces hydrochloric gas as a by-product.

When NAC is heated with conc H2SO4 Br2 is produced when NaCl is heated with conc H2SO4 HCl?

In case of NaBr, Br- acts as reducing agent fr H2SO4 and the sulphuric acid is reduced to sulphr ioxide by bromide ion which itself gets oxideised to give bromine free molecule. 2NaBr + 2H2SO4 –> NaHSO4 + Br2 + SO2 + 2H2O. Plz mark it as brainlist .

Which gas evolved when formic acid was heated with sulphuric acid?

thus CO (carbon monoxide) gas evolved when Formic acid heated with Sulphuric acid. Carbon monoxide is toxic gas which cause respiratory defects and exploration of these diseases cause even death also.

What happens when formic acid is heated with concentrated H2SO4?

When formic acid is heated with concentrated H 2 S O 4, the gas evolved is 1. The process of zone refining is used in the purification of 2. The number of water molecules present in a drop of water weighing 0.018 g m is 3. Empirical formula of a compound is C H 2 O and its molecular mass is 90, the molecular formula of the compound is 4.

What happens when P C L5 reacts with H2SO4?

Excess of P C l 5 reacts with conc. H 2 S O 4 giving 4. The process of zone refining is used in the purification of 5. The number of water molecules present in a drop of water weighing 0.018 g m is 6. Hybridised states of carbon in Graphite and Diamond are respectively 7. Mesomeric effect involves 8.

What happens when ethanol is dehydrated with sulphuric acid?

When ethanol is dehydrated by concentrated sulphuric acid, one hydroxyl group (-OH) and one hydrogen atom (H) is condensed from ethanol. The following structure of ethanol shows the condensed part of ethanol.