Determine the ph of a hcl acid solution of 0.024 a. 0.62 b. 7.02 c. 1.62 d. 2.94

C. 1.62.

Explanation:

∵ pH = - log[H⁺],

[H⁺] = 0.024 M.

∴ pH = - log(0.024) = 1.62.

So, the right choice is: C. 1.62.

answer: enthalpy

explanation:

for a exothermic reaction, the energy is released i.e. the energy of the products is lower than the energy of the reactants.

= enthaply

= energy of products

= energy of reactants

as , thus comes out to be negative. negative value of enthalpy shows that the reaction is exothermic.

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