Answer to Question #145473 in Chemistry for Michelle

Question

Determine the molarity M of a solution of 0.150 g of NaOH in 100 mL of water (Na = 23; O = 16; H = 1)

Answer 1

C_M=n/V

n=m/M

M (NaOH)=40 g/mol

n (NaOH)=0.150/40=0.004 mol

100 ml=0.1 L

C_M(NaOH)=0.004/0.1=0.04 M