Which of the following solutions has the highest $pH = 14$?

  • A
    $0.1 \ M \ H_2SO_4$
  • B
    $0.1 \ M \ NaOH$
  • C
    $1 \ N \ NaOH$
  • D
    $1 \ N \ HCl$

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Given that the dissociation constant for $H_2O$ is $K_w = 1 \times 10^{-14} \ mol^2/L^2$. What is the $pH$ of a $0.001 \ M$ $KOH$ solution?

$NaOH_{(aq)}$,$HCl_{(aq)}$ and $NaCl_{(aq)}$ concentration of each is $10^{-3} \, M$. Their $pH$ will be respectively

$10^{-6} \ M \ HCl$ is diluted $100$ times. Its $pH$ is

Select the correct option that has the same $pH$ value.
$(1) 0.005 \, M \, H_2SO_4$
$(2) 0.1 \, M \, Na_2SO_4$
$(3) 10^{-2} \, M \, NaOH$
$(4) 0.01 \, M \, HCl$

The hydrogen ion concentration of $0.001 \ M$ $NaOH$ solution is

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