`H_(2)` gas liberated in the reaction of 13g of zinc with dilute `H_(2)SO_(4)` is separately passed over (i) 10 g and (ii) 20 g of dry cupric oxide. What is the amount of the residue remain in each case?

20g of a metal reacts with dilute H_(2)SO_(4) to liberate 0.504g of H_(2) gas. Calculate the amount of metal oxide formed from 2.0g of the metal.

What type of sol is obtained when H_(2)S gas is passed over an aqueous solution is SO_(2) ?

State, with equations, what happens when SO_(3) gas is passed through conc. H_(2)SO_(4) .

How many grams of H_2 would be produced, if 130 g of zinc reacts with an excess of dilute of H_2SO_4 (Zn-65)

Calculate the volume of H_(2) gas (at STP) liberated by the reaction of exces Zn with 500 mL 0.5(N) H_(2)SO_(4) .

Iron reacts with dilute HCl quantitatively to form H_(2):Fe(s)+2HC l(aq)toFeCl_(2)(aq)+H_(2)(g) 56g of iron is allowed to react completely with dil HCl at 25^(@) . If this reaction is carried out seperately (1) in a closed container of fixed volume and (2) in an open breaker, then calculate the work done in each case. assume H_(2) gas behaves like an ideal gas.

At a particular temperature and pressure, the heat produced in the formation of 2 mol of C_(2)H_(6)(g) from the reaction between C_(2)H_(2)(g) and H_(2)(g) is 626 kJ. What amount of H_(2)(g) will react with the required amount of C_(2)H_(2)(g) to produce 939 kJ of heat at the same temperature and pressure?

A mixture of 2.3 g formic acid annd 4.5 g oxalic acid is treated with con.c H_(2)SO_(4) . The evolved gaseous mixture is passed through KOH pellets. Weight (in g ) of the remaining product at STP will be-

At a particular temperature and pressure, the volume of 12 g of H_2 gas is 134.5 L. what will be the final volume of the gas if 4 g of H_(2) gas is added to it at the same temperature and pressure?

Constant temperature, the following reaction is at equilibrium in a closed container: C(s)+H_(2)O(g)hArr CO(g)+H_(2)(g) At constant pressure, if the amount of the solid carbon is reduced to half at equilibrium, then what will be the change in the concentration of CO(g)?