In effect of concentration on rate, why is it important to
havethe same potassiumin four reaction mixtures?

Explanation:

If we change the concentration of Potassium since we take KI solution, concentration of I- changes, then the rate changes accordingly

Rate = k[H2O2 ]^a[I-]^b [H+]^c

The concentrations of I- and H+ are held constant in the procedure

thus to study the rate of the reaction, concentration of KI solution has to be constant only the peroxide solution varies.

120,630,890

step-by-step explanation:

110+10=120,620+10=630,880+10=890

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).