In the reaction CH4 + 2O2 CO2 + 2H2O, how many moles of oxygen, 02 are required

Question

In the reaction CH4 + 2O2 CO2 + 2H2O, how many moles of oxygen, 02 are required to burn 32.0 g of methane, CH4? a. 1.0 mol b. 2.0 mol c. 4.0 mol d. 8.0 mol e. 16 mol 19. All of the following are Arrhenius cids EXCEPT: a. H2S04 b. HC c. NaOH d. HCIO4 e. HBr 20. The temperature at which a liquid boils is the boiling point of the liquid. The boiling point is an indication of the intermolecular forces that hold the matter in the liquid state. Water, H20, boils at 100°C. Ethanol, C2H60 boils at 78 C. Ammonia, NH3, boils at -33°C. Which one of the following ranks the intermolecular forces in these liquids from the strongest to the weakest? a. Water> Ammonia> Ethanol b. Ammonia> Ethanol > Water c. Ethanol Water>Ammonia d. Water> Ethanol > Ammonia e. Ammonia >Water >Ethanol

Explanation / Answer

18) Ans - c 4.0 mole

molar mass of CH4 = 16 gm / mole then 32 gm of methane = 32/2 = 2 mole

According to reaction to burn 1 mole of methane require 2 mole of O2 then to burn 2 mole of methane require 2 X 2 = 4 mole of oxygen

19) Ans - c NaOH

because it is Base

20) Ans - d water > ethanol > ammonia

water boil at 1000 C so require more energy to boil that mean strong intermolecular forces in water than ethanol which have boiling point 780C and ammonia have boiling point -330C require less energy to boil so have weakest intermolecular forces.

Related Questions

Navigate

• Browse (All)
• Browse I
• Subjects

---

---

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