2. Which equation best models the reaction of vinegar (C2H4O2) and baking soda (NaHCO3)? . (a) C2H4O2 + NaHCO, NaC,H3O2 + H2O+CO2 (b) C2H4O2 + NaHCO3 NaC,H3O2 + H2O +O2 (c) C2H4O2 + NaHCO3 NaC,H,O2 + H2O + H2 (d) C2H¾O2 + 2NAHCO, NaC2H3O2 + H2O + CO2 3. Why did you pick that equation in question 2? 4. How do you know if a reaction is endothermic?

What is the molarity of an HCl solution if 27.3 mL of it neutralizes134.5 mL of 0.0165 M Ba(OH)2?(a) 0.0444 M (b) 0.0813 M (c) 0.163 M (d) 0.325 M (e) 3.35 M

Sodium hydrogen carbonate NaHCO3, also known as sodium bicarbonate or "baking soda", can be used to relieve acid indigestion. Acid indigestion is the burning sensation you get in your stomach when it contains too much hydrochloric acid HCl, which the stomach secretes to help digest food. Drinking a glass of water containing dissolved NaHCO3 neutralizes excess HCl through this reaction: HCl(aq)+NaHCO3(aq)→NaCl(aq)+H2O(l)+CO2(g)  The CO2 gas produced is what makes you burp after drinking the solution. Suppose the fluid in the stomach of a woman suffering from indigestion can be considered to be 200.mL of a 0.089M HCl solution. What mass of NaHCO3 would she need to ingest to neutralize this much HCl? Be sure your answer has the correct number of significant digits.

4. (a) Calculate [H3O*] and [OH] for the solutions indicated: lemon juice, pH = 2.42 (1) (ii) household ammonia pH = 11.21 (iii) (iv) (v) phosphate buffer pH = 6.96 human urine pOH = 7.8 tomato juice pOH = 9.9

can you please answer the chem questions on the image attached below?  i have included another picture for the choices available for first one thank you so very much

The proton donor in the reaction below is: * CH,COOHag) + H,0, → H,O^ (aq) + CH,CO ag) (1) CH;COOH O°H O O H,0" O CH,CO01

Are the following statements true or False?   A) Ammonium sulfate and barium nitrate; No reaction occurs B) Sodium phosphate and potassium nitrate; No reaction occurs C) Calcium acetate and sodium carbonate; Ca2+(aq) + CO32-(aq) ----> CaCO3(s) D) Magnesium chloride and sodium hydroxide; Mg2+(aq) + 2OH-(aq) ---> Mg(OH)2(s) E) Lead(II) nitrate and sodium chloride; No reaction occurs

A neutralization reaction between KOH (aq) and H2SO4 (aq) would give which two products?

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 reactions are correct? (a) (b) HO H3O* Br Br2 (c) CUCN CN O a, b, c Oc & b O a & c O a & b