`PCl_5` reacts with finely divided silver on heating and a white silver salt is obtained, which dissolves on adding excess aqueous `NH_3` solution. Write the reactions involved to explain what happens.

What happens when H_3PO_3 is heated? Write the reactions involved .

What happens when PCl_5 is heated . Write the reactions involved.

An aqueous solution of metal ion M_1 reacts separately with reagents Q and R in excess to give tetrahedral and square planar complexes, respectively. An aqueous solution of another metal ion M_2 always forms tetrahedral complexes with these reagents. Aqueous solution of M_2 on reaction with reagent S gives white precipitate which dissolves in excess of S. The reactions are summarized in the scheme given below : M1, Q and R , respectively are :

If a copper plate reamins immeresed in silver nitrate solution for some time then what happens? write the ionic equation for the reaction

A water soluble compound 'X' of sodium on reacting with dil. H_2SO_4 released a colourless gas accompanied by brisk effervescence. When the gas was passed through water, the solution obtained turned blue litmus solution red. On bubling the gas through lime water, it initially became milky and the milkness disappeared when the gas was passed in excess. Identify the substance 'X' and write the chemical equation for the reactions involved.

Which type of chemical reactions take place when White precipitate of silver chloride is formed when silver nitrate is added to sodium chloride solution.

What happens when an aqueous solution of sodium sulphate reacts with an aqueous solution of barium chloride? State the physical conditions of reactants in which the reaction between them will not take place. Write the balanced chemical equation for the reaction and name the type of reaction.

0.02 mole of [Co(NH_3)_5 Br] Cl_2 and 0.02 mole of [Co(NH_3)_5Cl] SO_4 are present in 200 cc of a solution X. The number of moles of the precipitates Y and Z that are formed when the solution X is treated with excess silver nitrate and excess barium chloride are respectively

6.2g of a sample containing Na_2CO_3, NaHCO_3 and non-volatile inert impurity on gentle heating loses 5% of its mass due to reaction 2NaHCO_3 rarr Na_2 CO_3 + H_2 O + CO_2 . Residue is dissolved in water and formed 100mL solution and its 10mL portion requires 7.5 mL of 0.2M aqueous solution of BaCI_2 for complete precipitation of carbonates. Determine mass (in gram) of Na_2 CO_3 in the original sample.