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प्रश्न
P and Q are aqueous solutions of sodium chloride and sodium hydroxide, respectively. Which of these will turn:
- blue litmus red?
- red litmus blue?
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उत्तर
- Neither solution will turn blue litmus red. Solution P (NaCl) is a neutral salt formed from a strong acid (HCl) and a strong base (NaOH). When dissolved in water, it dissociates into Na+ and Cl− ions, which do not react with water. As a result, the concentration of H+ and OH− ions in water remains equal, making the solution neutral. Solution Q (NaOH) is basic, so it won't turn blue litmus red either.
- Sodium hydroxide solution (Q) will turn red litmus paper blue because it is a strong base and releases excess hydroxide ions (OH−) in water.
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संबंधित प्रश्न
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A compound which in the aqueous solution state, is neutral in nature.
