A sample of 3.95g of 60% pure chalk (impurities in the chalk are insoluble in HCl), is dissolved in 250 mL of 0.2(M) HCl. What volume `(cm^(3))` of 0.01 (N) NaOH is required to neutralise the excess acid?

5.3g of M_(2)CO_(3) is dissolved in 150 mL of 1(N) HCl. Unused acid required 100 mL of 0.5(N) NaOH. Hence equivalent weight of M is-

Find the volume (in mL) of 0.2 (N) NaOH solution required to neutralise 25 mL of 0.2(N) H_(2)SO_(4) solution.

Calculate the amount of heat evolved when 500 cm^3 of 0.1 M HCl is mixed with 200 cm^3 of 0.2 M NaOH.

What volume of 0.5M KMnO_(4) solution is required to oxiside 2.0g of FeSO_(4) to acid medium ?

4.08g of a mixture of BaO and unknown carbonate (MCO_(3)) was heated strongly. The residue weghing 3.64g was dissolved in 100 mL of 1(N) HCl. The excess acid required 16 mL of 2.5(N) NaOH solution for complete neutralisation. Identify the metal.

P^H of a solution made by mixing 50 ml of 0.2 M NH_4Cl and 75 ml of 0.1 M NaOH is [P^(k_b) of NH_3(aq) =4.74]

Mention whether the following solution will act as bugger solutions or not 100 mL of 0.1(M)CH_3COOH+100mL of 0.1(M) HCl

100 mL of a buffer solution (pH=9.5) is to be prepared using 0.3(M) NH_(3) and 0.1(M) HCl solution. What are the volumes (in mL) of NH_(3) and HCl required to prepare this buffer solution? Given: pK_(b)(NH_(3))=4.74 .

2g of metal carbonate is neutralised completely by 100 mL of 0.1 (N) HCl. The equivalent weight of metal carbon ate is-

20 mL of 0.2 M sodium hydroxide is added to 50 mL of 0.2 M acetic acid to give 70 mL of the solution. The additional volume of 0.2M NaOH required to make the pH of the solution 4.74 is