If 60.50 ml of HCl solution reacts with 0.2064 g of Na_2CO_3, what is the normal

Question

If 60.50 ml of HCl solution reacts with 0.2064 g of Na_2CO_3, what is the normality of the HCl solution a) 0.1287 N b) 0.0644 N c) 0.4291 N d) 0.0858 N e) 0.2575 16 N. lf 7.092 kJ of heat is added to a calorimeter containing 75.40 g of water, the temperature of the water at from 24.58 degree C to 35.82 degree C. Calculate the heat capacity of the calorimeter (in J/degree C). The specific heat of a) 55.34 J/degree C b) 315.5 J/degree C c) 17.36 J/degree d) 622 J/degree C Estimate the molecular weight of a polymer if a 100, -mL solution of 11 g of the polymer in toluene has atm at 29 degree C. a) 45,000 b) 22,000 c) 36,000 d) 62,000 e) 5500 Determine the vapor pressure lowering of solution of 75.0 grams of sucrose, C_12H_22O_11, dissolved in vapor pressure of pure water at 27 degree C is 26.7 torr. Assume the solution is ideal and sucrose is a a) 0.058 torr b) 0.6 torr c) 0.573 torr d) 0.585 to What is the net ionic equation for the following formula unit equation? Cu(NO_3)_2(aq) + H_2S(aq) rightarrow CuS(s) + 2HNO_2(aq) a. [Cu^2+(aq)+2NO_3(aq) + H_2S(aq) rightarrow CuS(s) + 2[H^+(aq)+2NO_3(aq)] b. Cu^2+(aq) + H_2S(aq) rightarrow CuS(s) + 2H^+(aq) c. Cu^2+(aq) + 2H^+(aq) + S^2+(aq) rightarrow CuS(s) + 2H^+(aq), e. Cu^2+(aq) + 2NO^-_3(aq) + S^2-(aq) rightarrow CuS(s) + 2H^+(aq) + 2NO^-_3(aq) What mass of 30.0% Ba(NO_3)_2 solution contains 40.0 grams of Ba(NO_3)_2? a. 117 g b. 133.3 g c. 321 g d. 125.0 g e. 62.5 g For which one of the following equations is K_c equal to K_p? a) 2SO_3(g) 2SO_2(g) + O_2(g) b) C(s) + CO_2(g) 2CO(g) c) N_2O_4(g) 2NO_2(g) d) Br_2(g) + Cl_2(g) 2BrCl(g) The value of K_c for the following reaction is 0.962 at 1258 degree C. 2I(g) I_2(g) If k_f is the rate constant for the forward reaction and k_r is the rate constant for the reverse rea a) kf k_r c) k_f = k_r d) k_f/k_r Consider an experiment where 35.0 mL of 0.175 HA is titrated with 0.25 M NaOH. What is the titration? The K_a for HA is 1.8 times 10^-5. a) 2.87 b) 5.22 c) 8.88 d) 11.13 e) 10.12 What is the % ionization of hypochlorous acid (HClO) in a 0.015 M solution of HClO? (K_a = a) 14 b) 4.5 times 10^-8 c) 0.14 d) 2.1 times 10^-5 Calculate the pH of 0.0756 M HNO_3. a) 7.091 b) 1.12 calculate the value of K_a. H_2A + H_2O HA^- + H_2O^+ K_1a = 9.3 times HA^- + H_2O A^2- + H_2O^+ K_2a = 3.5 H_2A + 2H_2O rightarrowoverleftarrow A^2- + H_2O^+ K_ a) 3.6 times 10^-2 b) 9.6 times 10^-4

Explanation / Answer

Q15.

V = 60.50 mL of HCl

m = 0.2064 g of Na2CO3

MW Na2CO3 = 105.9888 g/mol

mol = mass/MW = 0.2064/105.9888 = 0.001947 mol of Na2CO3

then, ratio is

1:2 so

0.001947 --> 0.001947*2 = 0.003894 mol of HCl

[HCl] = mol/V = 0.003894/(60.50*10^-3)=0.06436 M

normality of HCl --> 1 equivalent to N = M

N = 0.06436 M

Related Questions

Navigate

• Browse (All)
• Browse I
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.