B) 530 g NacT C) 53 g NaCl D) 0.016 g NaCl E) 1.6 g NaCl 37. How many grams of i
ID: 705271 • Letter: B
Question
B) 530 g NacT C) 53 g NaCl D) 0.016 g NaCl E) 1.6 g NaCl 37. How many grams of iron (III) oxalate are present in a 20. 0 ml sample of a 0.500 M solution? A) 2.14 g B) 3.20 g C) 4.84 g D) 2.42 g E) 1.21 g 38. A 50.0 ml. sample of a 6.00 M solution of chloric acid is diluted to 200. mL. What is the new concentration? A) 24.0 M B) 6.0 M C)2.10M D) 2.00 M E) 1.50 M 39. An Arrhenius base is A) a compound that contains hydroxide and dissolves in water to form OH- B) a compound that is a proton donor C)a compound that is a proton acceptor compound that contains a hydrogen atom and dissolves in water to form a hydrogen ion, H E) a compound that is an electron acceptor 10Explanation / Answer
37. no of moles of Fe2(C2O4)3 = molarity * volume in L
= 0.5*0.02 = 0.01 moles
mass of iron (III) oxalate = no of moles * gram molar mass
= 0.01*375.747 = 3.76g
38.
Before dilution After dilution
M1 = 6M M2 =
V1 = 50ml V2 = 200ml
M1V1 = M2V2
M2 = M1V1/V2
= 6*50/200 = 1.5M
E. 1.5M
39. In aqueous solution which gives OH^- ions is called base
NaOH ------------> Na^+ (aq) + OH^- (aq)
A. a compound that contains hydroxide and dissolves in water to form OH^-
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