20 mL of 0.1 M NH 4 OH is mixed with 40 mL of 0.05 M HCl.The pH of the mixture is nearest to(Given :K b (NH 4 OH) = 1×10 –5 ,log2 = 0.30,log3 = 0.48, log5 = 0.69,log7 = 0.84,log11 = 1.04)

∴ In final solution 2 millimoles of NH 4 Cl is present.

Question:

20 mL of 0.1 M NH₄OH is mixed with 40 mL of 0.05 M HCl.The pH of the mixture is nearest to(Given :K_b(NH₄OH) = 1×10^–5,log2 = 0.30,log3 = 0.48, log5 = 0.69,log7 = 0.84,log11 = 1.04)

Updated On: Sep 24, 2024

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∴ In final solution 2 millimoles of NH₄Cl is present.

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The rate of a chemical reaction is defined as the change in concentration of any one of the reactants or products per unit time.

Consider the reaction A → B,

Rate of the reaction is given by,

Rate = −d[A]/ dt=+d[B]/ dt

Where, [A] → concentration of reactant A

[B] → concentration of product B

(-) A negative sign indicates a decrease in the concentration of A with time.

(+) A positive sign indicates an increase in the concentration of B with time.

There are certain factors that determine the rate of a reaction: