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NTA Abhyas 2020
Exam
NTA Abhyas
Year
2020
Subject
Chemistry
Chapter
Ionic Equilibrium

NTA Abhyas 2020 · Chemistry · Ionic Equilibrium

The solution of N a _ 2 C O _ 3 has pH

The solution of Na2CO3N{a}_{2}C{O}_{3} has pH\text{pH}

Options

  1. Agreater than 7
  2. Bless than 7
  3. Cequal to 7
  4. Dequal to zero

Correct answer

A. greater than 7

Step-by-step solution

Na2CO3N{a}_{2}C{O}_{3} is the salt of strong base and weak acid.
{Na2CO3+2H2O→2NaOH+H2CO3Strong baseWeak acid\begin{cases}{Na}_{2} {CO}_{3} & + & 2 {H}_{2} \text{O} & \to & 2 \text{NaOH} & + & {H}_{2} {CO}_{3} \\ & & & & \text{Strong base} & & \text{Weak acid}\end{cases}
Hence, the solution of Na2CO3N{a}_{2}C{O}_{3} has pH greater than 7.
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