Consider the following salts :Na<sub>2</sub>CO<sub>3</sub>, NaCl, NH<sub>4</sub>Cl, CH<sub>3</sub>COONa, K<sub>2</sub>SO<sub>4</sub>, (NH<sub>4</sub>)<sub>2</sub>SO<sub>4</sub> <br> Which of these salts will give : <br> <b>(a)</b> acidic solutions? <br> <b>(b)</b> neutral solutions? <br> <b>(c)</b> basic solutions (or alkaline solutions)?