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Equilibrium

Question
CBSEENCH11006541
Wired Faculty App

0·049g H2SO4 acid is dissolved in water to prepare 200 ml solution. Calculate the pH of the solution.

Solution
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Since H2SO4 is strong acid, it is completely dissociated, one mole H2SO4 produces two moles of H+ ions,
straight H subscript 2 SO subscript 4 space space rightwards arrow with water on top space space 2 straight H to the power of plus left parenthesis aq right parenthesis space plus space SO subscript 4 superscript negative 2 end superscript left parenthesis aq right parenthesis open square brackets straight H to the power of plus close square brackets space equals space 2 open square brackets straight H subscript 2 SO subscript 4 close square brackets space space space space space space space space equals space 2 space cross times space 0.0025 space space space space space space space space equals space 0.005 space straight M space space space space space space space space space equals space 5 space cross times space 10 to the power of negative 3 end exponent straight M
We space know comma space space space space pH space equals space minus log space open square brackets straight H to the power of plus close square brackets space equals space minus log space open square brackets 5 space cross times space 10 to the power of negative 3 end exponent close square brackets space space space space space space space space equals negative open square brackets log space 5 space plus space log space 10 to the power of negative 3 end exponent close square brackets space space space space space space space space equals negative open square brackets log space 5 space minus space 3 space log space 10 close square brackets space space space space space space space space equals space minus space open square brackets 0.6990 plus 3 close square brackets therefore space space pH space equals space 2.301

Some More Questions From Equilibrium Chapter

Give two examples of physical equilibrium.

What kind of molecules in a liquid can evaporate?

Name the factors on which vapour pressure of any liquid depends.

Which measurable property becomes constant in water vapour equilibrium?

Give an example from daily life in which there is gas solution equilibrium?

A crystal of common salt of a given mass is kept in its aqueous solution. After 24 hours, its mass remains the same. Is the crystal in equilibrium with the solution?

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