Volume of Na2S₂O3 used in the titration (ml) Moles of Na2S203 used in the titration Moles of I2 initially present in titration mixture (see Eqn. 2)| Moles of NaOCI in diluted bleaching solution titrated (see Eqn. 1) Mass of NaOC1 in diluted bleaching solution titrated Volume of commercial bleaching solution titrated Mass of commercial bleaching solution titrated % N₂OCl in commercial bleaching solution Average % NaOC1 in commercial bleaching solution 5.2 27.82 26.20

The balanced equation for the neutralization reaction of aqueous H₂SO with aqueous KOH is shown. H₂SO4 (aq) + 2 KOH(aq) 2 H₂O(1) + K₂SO4 (aq) What volume of 0.420 M KOH is needed to react completely with 20.9 mL of 0.300 M H₂SO4? volume: mL

Which of the following reaction equations represents the dissolution of a non-electrolyte that is soluble in water?             H2O C6H12O6(s)  C6H12O6(aq)   HCl(g) + H2O(l)  H3O+(aq) + Cl-(aq)   HNO3(l) + H2O(l)  H3O+(aq) + NO3-(aq)   HF(g) + H2O(l)  H3O+(aq) + OH-(aq)              H2O NH3(g)  NH4+(aq) + OH-(aq)

Which of the following solutions is best for titrating an analyte solution containing sodium lactate, CH3CH(OH)CO2Na? Aqueous sodium carbonate, Na2CO3(aq) Aqueous ammonia, NH3(aq)  Nitric acid, HNO3(aq) Acetic acid, CH3CO2H(aq) Aqueous sodium hydroxide, NaOH(aq)

NaOH (aq) + HCI (aq) →>> NaCl (aq) + H₂O (1) 34.90 mL of 0.1002 M NaOH was used to titrate 11.00 mL of HCI to the endpoint. Calculate the mol of HCI that reacted and the molarity of the HCI solution. SHOW WORK. Write out the problem on paper showing all conversion factors, unit cancellations, calculations, s.f., etc. Answer the questions related to the setup and calculation for this problem. Be sure to use our periodic table to calculate any molar masses needed (rounded to proper number of decimal places), otherwise your values might be slightly off and answers may be marked as incorrect. Abbreviate units as follows: grams = g, moles = mol, molarity = M Enter where each reactant is placed at the beginning of the experiment (options are buret or flask): NaOH: HCI: Use the three blanks to enter the number. unit, and substance un IS G $ % 2

Ascorbic acid (vitamin C, H2C6H6O6)  is widely used in many food products. A solution of  0.1 M of ascorbic acid Ka1 = 7.9x10-5 and Ka2 = 1.6x10-12 is made, what is the concentration (in M) of ascorbate ion C6H6O62- H2C6H6O6(aq) + H2O(I) <---> H3O+(aq) + HC6H6O6-(aq) HC6H6O6-(aq)+ H2O(I) <---> H3O+(aq) + C6H6O62-(aq)     Question options:   1.6X10-12   5.9X10-12   3.7X10-12   2.3X10-12   6.3X10-12

How many mL of 0.455 M HCI are needed to dissolve 9.32 g of BaCO3? 2HCl(aq) + BaCO3(s) →→→ BaCl₂(aq) + H₂O(l) + CO₂(g) - mL

What quantity in moles of precipitate will be formed when 60.5mL of 0.350M AgNO3 is reacted with excess Mgl2 in the following reaction? 2 AgNO3(aq)+Mgl2(aq)= 2Agl(s)+Mg(NO3)2(aq)

Calcium carbonate (CaCO3) reacts with stomach acid (HCl, hydrochloric acid) according to the following equation: CaCO3(s)+2HCl(aq)⟶CO2(g)+H2O(l)+CaCl2(aq) Tums, an antacid, contains CaCO3. If Tums is added to 15.0 mL of a solution that is 0.500 M in HCl, how many grams of CO2 gas are produced? Express the mass to three significant figures and include the appropriate units.

The balanced equation for the neutralization reaction of aqueous H2SO4 with aqueous KOH is shown.   H2SO4(aq)+2KOH(aq)⟶2H2O(l)+K2SO4(aq) What volume of 0.350 M KOH is needed to react completely with 24.6 mL of 0.165 M H2SO4?