(C) The $pH$ value is inversely proportional to the concentration of hydrogen ions $[H^+]$.As the $pH$ value decreases,the concentration of $[H^+]$ io

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(C) The $pH$ value is inversely proportional to the concentration of hydrogen ions $[H^+]$.As the $pH$ value decreases,the concentration of $[H^+]$ ions increases,which means the acidity of the solution increases.Given $pH$ values are: $A = 1.9, B = 2.5, C = 2.1, D = 3.0$.Comparing these values: $1.9 Since lower $pH$ indicates higher acidity,the order of acidity is $A > C > B > D$.This is equivalent to $D < B < C < A$.

Class 10 Science Acids, Bases and Salts Mix Examples - Acids, Bases and Salts

Easy

If the $pH$ of the aqueous solutions $A, B, C$ and $D$ are $1.9, 2.5, 2.1$ and $3.0$ respectively,then what will be the order of acidity?

A
$A < C < B < D$
B
$D < C < B < A$
C
$D < B < C < A$
D
$D > C > B > A$

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Mix Examples - Acids, Bases and Salts

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If the $pH$ of the aqueous solutions $A, B, C$ and $D$ are $1.9, 2.5, 2.1$ and $3.0$ respectively,then what will be the order of acidity?

Similar Questions

Give reasons for the following:$(a)$ Aqueous solution of an acid conducts electricity.

In a basic aqueous solution,if the concentration of $[OH^-]$ decreases,what happens to the $pOH$?

Write the chemical name and formula of the following:$(a)$ Salt formed by the combination of a weak acid like carbonic acid and a strong base like sodium hydroxide.$(b)$ Basic substance formed by the chlor-alkali process.$(c)$ Substance added to cakes to make them fluffy.

What will be the action of the following substances on litmus paper? Dry $HCl$ gas,Moistened $NH_3$ gas,Lemon juice,Carbonated soft drink,Curd,Soap solution.

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Give reasons for the following:
$(a)$ Aqueous solution of an acid conducts electricity.

Write the chemical name and formula of the following:
$(a)$ Salt formed by the combination of a weak acid like carbonic acid and a strong base like sodium hydroxide.
$(b)$ Basic substance formed by the chlor-alkali process.
$(c)$ Substance added to cakes to make them fluffy.