Calculate the molality of 2.5 g of ethanoic acid

Asked by admin @ 13/08/2021 in Chemistry viewed by 300 People

Calulate molality of 2.5 g of ethanoic acid in 75g of benzene

Answered by admin @ 13/08/2021

Molecular wt of ethanoic acid = 46
Molality = wt. of solute x 1000 / molecular wt.of solute x wt, of solvent in grams

= 2.5 x 1000 / 46 x 75 = 0.72m

Calculate the mass of 6.9 moles of nitrous acid hno2

Asked by admin @ 29/10/2021 in Chemistry viewed by 366 persons

The value of Ka for nitrous acid (HNO2) at 25 ∘C is 4.5×10−4 .a. Write the chemical equation for the equilibrium that corresponds to Ka1. H+(aq)+NO−2(aq)⇌HNO2(aq)2. HNO2(aq)⇌H+(aq)+NO−2(aq)3. HNO2(aq)⇌H−(aq)+NO+2(aq)4. HNO2(aq)+H+(aq)⇌H2NO+2(aq)5. HNO2(aq)+H−(aq)⇌H2NO+2(aq)b. …

Calculate the molecular mass of nitric acid hno3

Asked by admin @ 29/08/2021 in Chemistry viewed by 323 persons

Calculate the molar mass of nitric acid HNO3 (H=1,N=14,O=16)

Calculate the percentage ionization of 0.01 m acetic acid

Asked by admin @ 20/08/2021 in Math viewed by 301 persons

Calculate the percentage ionization of 0.01 m acetic acid in 0.1 m hcl

Calculate the percentage ionisation of 0.01 m acetic acid

Asked by admin @ 20/08/2021 in Math viewed by 295 persons

Calculate the percentage ionization of 0.01 m acetic acid in 0.1 m hcl

The solution of 2.5 g of a non volatile

Asked by admin @ 20/08/2021 in Chemistry viewed by 275 persons

A solution of 2.5 g of a non volatile solid in 100g benzene boiled at 0.42°c higher than the boiling point of pure benzene.Calculate the molecular mass of the substance.Molal …

Calculate the equivalent weight of k2cr2o7 in acidic medium

Asked by admin @ 17/08/2021 in Chemistry viewed by 318 persons

The equivalent weight of K2Cr2O7 in acidic medium is

Calculate the mass of urea required in making 2.5

Asked by admin @ 12/08/2021 in Science viewed by 316 persons

Calculate the mass of Urea required in making 2.5 kg of 0.25 molal aqueous solution

How many moles are present in 21.2 g hydrochloric acid

Asked by admin @ 06/08/2021 in Biology viewed by 306 persons

How many moles are present in 21.2g HCl?

Calculate the percent ionization of formic acid solutions having the following concentrations.

Asked by maham237 @ 27/12/2020 in Chemistry viewed by 375 persons

Calculate the percent ionization of formic acid solutions having the following concentrations.a) 1.20Mb)0.450Mc)0.130Md)5.10 x 10^-2

Calculate the acid dissociation constant of a weak monoprotic

Asked by maham237 @ 27/12/2020 in Chemistry viewed by 311 persons

Calculate the acid dissociation constant of a weak monoprotic acid if a 0.5M solution of this acid gives a hydrogen-ion concentration of 0.000 1M? Show your work.

Calculate ph of buffer solution acetic acid and sodium acetate

Asked by admin @ 05/11/2021 in Chemistry viewed by 323 persons

Calculate the ph of 0.375 l of a 0.18 m acetic acid-0.29 m sodium acetate buffer after the addition of 0.0090 mol of koh. assume that the volume remains constant.

An aqueous solution of 6.3 g oxalic acid

Asked by admin @ 29/08/2021 in Chemistry viewed by 355 persons

an aqueous solution of 6.3g of oxalic acid dihydrate is made upto 250ml. the volume of 0.1N NaOH required to completely neutralize 10ml of this solution is ?