Determine the mole fraction of naoh

Reference no: EM13677206

A solution is prepared by mixing 0.275 mole NaOH (40.0g/mole) with 189g H2O (18.0g/mole). Its density is 1.061 g/mL.
Determine

a) The mass % of NaOH

b) The mole fraction of NaOH

c) The molarity

d) The molality

Reference no: EM13677206

Questions Cloud

Compute the molecular weight of the electrolyte : While 2.0 grams of an electrolyte was dissolved in 25.0 grams of water the resulting solution was found to have a molarity of 0.815M and a molality of 0.800m.

Compute the normal boiling point of the liquid : A certain liquid has a vapor pressure of 92.0 torr at 23.0 C and 236.0 torr at 45.0 C. Compute the value of delta H vap for this liquid. Determine it in kJ/mol. Compute the normal boiling point of this liquid. Find it in C.

Explain how much energy is required to heat : At 1 atm, explain how much energy is required to heat 57.0 g of H2O(s) at -20.0 C to H2O(g) at 139.0 C

State balanced chemical equation for the reactions : A mixture of oxygen and hydrogen is examined by passing it over hot copper oxide and through a drying tube. Hydrogen reduces the CuO to metallic Cu. Oxygen then reoxidizes the copper back to CuO.

Determine the mole fraction of naoh : A solution is prepared by mixing 0.275 mole NaOH (40.0g/mole) with 189g H2O (18.0g/mole). Its density is 1.061 g/mL. Determine

Explain what would be the ratio of the unprotonated form : Uric acid dissociates as shown in the figure at the right with a pKa of 5.80 as well as can be treated as a simple monoprotic acid in this pH range. Its solubility in urine depends on the relative amount of protonated and unprotonated forms. A uri..

Define why a significant excess of sodium borohydride : Define why a significant excess of sodium borohydride, NaBH4, is used to reduce aldehyde compounds containing additional acidic functional groups (eg phenols, carboxylic acids). Give a balanced chemical reaction for one mole of a carboxylic acid (..

Explain what is the theoretical yield of 5-dimethoxybenzen : Explain what is the theoretical yield of 1, 4-di-t-butyl-2, 5-dimethoxybenzene (MW = 250.38 g/mol) if 1.32 g of 1, 4-dimethoxybenzene (MW = 138.16 g/mol) is mixed with 5.68mL of t-BuOH (MW = 74.12 g/mol, d = 0.786 g/mL) and excess 18M H2SO4

Compute the mass in g of precipitate formed when excess : Compute the mass in g of precipitate formed when excess sodium hydroxide is added to 42.5mL of 15.5% magnesium nitrate solution whose density is 1.12 g/mL.

User Account

All Pages