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(A) The $pH$ scale ranges from $0$ to $14$ for aqueous solutions at $25^{\circ}C$,where higher $pH$ values indicate higher basicity.$(A)$ Saturated so

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Saturated solution of $NaOH$

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(A) The $pH$ scale ranges from $0$ to $14$ for aqueous solutions at $25^{\circ}C$,where higher $pH$ values indicate higher basicity.$(A)$ Saturated solution of $NaOH$ is a strong base with a very high concentration of $OH^-$ ions,resulting in a $pH \approx 15$.$(B)$ $1 \ M \ HCl$ is a strong acid,resulting in a $pH \approx 0$.$(C)$ Human saliva is slightly acidic to neutral,with a $pH \approx 6.4$.$(D)$ Lemon juice is acidic,with a $pH \approx 2.2$.Therefore,the saturated solution of $NaOH$ has the highest $pH$ value. Hence,option $(A)$ is correct.

Which of the following will have the highest $pH$?

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