Answer to Question #342799 in General Chemistry for Ma. daniella gapa

Question

Express the concentration of solution in % w/v containing 12 g sodium chloride and 50 ml of water.

Answer 1

1. C_% = m_NaCl / m_total * 100 = 12 / (12+50) * 100 = 19.35 %

2. C_M = n / V

n = m_NaCl / M_NaCl = 12 / 40 = 0,3 mol

C_M = 0,3mol / 0,05 litres = 6 mol/l

ANSWER: 19,35 % NaCl of solution;

6 mol/l NaCl of solution.