For the following questions, 1-50, Match the best choice A-E. Some choices may b

Question

For the following questions, 1-50, Match the best choice A-E. Some choices may be used MORE than once. Some choices may NOT be used Which of the following are soluble in water or NOT soluble in water? Na_2CO_3 BaSO_4 NH_4NO_3 Acetic acid HC_2 H_3 O_2 Heptane, C_7H_10 Soluble in water NOT soluble in water Identify the following as acidic, basic, or neutral Sour apples Rain water pH = 5.6 Lemon juice Baking soda NaHCO_3 Quinine Tonic water, also known as Bitters because it contains an amine called quinine Acidic Basic Neutral Determine how many moles of each of the following compounds will react with 1 mole of H_2SO_4. KCl H_2CO_3 LiOH HNO_3 Be(OH)_2 2 moles 1 mole 0.5 moles 0.33 moles 0 moles = no reaction Match the situation or pH to the closest [H^+]. 1 M NaOH in water 0.005 M NH_4OH 10^-4 M H_2CO_3 pH = 5.6 (coffee) pOH = 8.4 (rain water) [H^+] = 1 times 10^-14 [H^+] = 1 times 10^-8.4 [H^+] = 1 times 10^-7 [H^+] = 1 times 10^-5.6 [H^+] = 1 times 10^-2 Match the following solutions to the best description. .0.14 M ammonia in water 6.2 times 10^-2 M H_2CO_3 0.28 M HCl 0.28 M HCl 0.28 M glucose C_6H_12O_6 blood (pH = 7.4) acidic and hypotonic basic and hypotonic neutral and isotonic acidic and hypertonic basic and isotonic Match the following descriptions to the amounts given as A-E grams of NaOH in 0.1 moles grams of NaOH in 10 mL of 2 M NaOH grams of NaOH in 30 mL of 10 M NaOH grams NaOH in 30 mL of 10 M NaOH grams of NaOH needed to make 100 mL of 0.5 M NaOH solution grams of NaOH needed to neutralize 100 mL of 2 M HCl 2g 8g 6g 4g 12g

Explanation / Answer

sodium carbonate is soluble in water, since it contains sodium ions and carbonate ions while water also has got positive and negative   ions the hydrogen atom and oxygen atom (H+ and OH-). +ve sodium binds to OH- and H+ to Carbonate. Hence sodium carbonate dissolves in water.

Acetic acid is hydrophilic and hence soluble in water. NH4NO2 also dissolves in water.

Heptane and BaSO4 are insoluble in water.

2. acids will have bitter taste and pH will be less than 7 for acidic medium, equal to 7 for neutral medium and >7 for basic medium.

sour applesl lemon juice and rain water are acidic, whie NaHCO3 is basic, quine tonic water is neutral,

2KCl + H2SO4-----> K2SO4 + 2HCl, hence 1 mole of H2SO4 requires 2 mole of   H2SO4

H2CO3 + H2SO4------> No reaction, zero moles ( both are acids and no reaction)

2LiOH + H2SO4----> Li2SO4 + H2O, 2 moles of LiOH

HNO3 + H2SO4----> No reaction since both of them are acids

Ba(OH)2 + H2SO4-----> BaSO4 + 2H2O, 1 mole of Ba(OH)2

4. 1M NaOH , since NaOH being strong base, completely ionizes and hence [OH-] =1M

pOH= -log (OH-)= 0

,pH= 14, [H+] =10-14

0.005 NH4OH , OH= 0.005, [H+]= 10-14/0.005=2*10-12 M

3. 10-4 M H2CO3

H2CO3 --------> H+ +HCO3-

[H+]= 10-4 ,

pH= 5.6, [H+] =10(-5.6)

pOH= 8.4, [H+] =10(-8.4), [H+] =10-14/ 10-8.4 =10-5.6

Related Questions

Navigate

• Browse (All)
• Browse F
• Subjects

---

---

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