A 0.23 g sample of an unknown di-protic acid is dissolved in water and titrated with 0.200 M NaOH. The titration is complete after 20.07 mL of base are added. The
equivalent mass of the acid is
56 g/mol
40 g/mol
21 g/mol
110 g/mol

if the concentration of products is decreased, the equilibrium will shift toward the products). add an inert gas (one that is not involved in the reaction) to the constant-volume reaction mixture: this will increase the total pressure of the system, but will have no effect on the equilibrium condition.

explanation:

answer: -

reaction:

na + cl ⇌ nacl

balanced chemical equation:

na + 2cl ⇌ nacl2

sodium + clorine goes to form sodium chloride (table salt).

the product is nacl2.

and the reactants are na and cl.

(note: if you don’t know what ⇌ means, read below: -

⇌(double head arrow) means reversible reaction).