1. Solution concentrations

a. Alkalinity, [Alk], is a measure of the capacity of a water to neutralize a strong acid or base, and it is typically expressed in mg/L as CaCO3. The alkalinity of a lake was found to be 120 mg/L as CaCO3. Express the lake alkalinity in meq/L.

b. Express: 1) 200 mg/L C12H22O11 mg/L as C; and 2) 8 mg/L NO3--N as mg/L NO3-

answer

watching

208

views

For unlimited access to Homework Help, a Homework+ subscription is required.

You have 0 free answers left.
Get unlimited access to 3.8 million step-by-step answers.

Get unlimited access

Already have an account? Log in

Patrina SchowalterLv2

17 Dec 2019

Unlock all answers

Get 1 free homework help answer.

Already have an account? Log in

Join us on Discord

Chemistry Study Group

Join now

Related questions

Please show your work, thank you!

(a) Sketch the titration curve for an alkalinity test in which the water sample had an initial pH of 6.35. In that test, 15 mL of 0.1 N acid was added to a 150-mL sample.

(b) Calculate the alkalinity in meq/L and mg/L as CaCO₃. Answer: 10 meq/L, 500 mg/L as CaCO₃

_{I know the answer is correct but I am having a problem on a few of the steps, please show all work for a "thumbs up"! Thanks!}

Hardness is defined as the sum of the divalent cations in water(cations have a positive ionic charge), expressed asCaCO3.Typically the major cations that contribute to hardness areCa^2+ and Mg^2+. A water supply was analyzed and it was found tohave 180 mg/L of Ca^2+ and 24.3 mg/L of Mg^2+. What is thehardness?(Hint: convert mass concentrations to equivalentconcentrations.)

A water supply is analyzed for carbonate species. The pH of thesample is 7.0 and the concentration of HCO3- is 22.5 eq/L. What isthe alkalinity of the water as (a) eq/L and b) as CaCO3? (Hint: Doyou need to include the equivalents of CO3^2- in calculatingalkalinity for this sample? Also, remember the meaning of pnotation, it will help you calculate theH^= and OH^-concentrations.)

Weekly leaderboard

Home

Homework Help 3,900,000

Chemistry 830,000

Unlock all answers

Related textbook solutions

Basic Chemistry

Principles of Chemistry Molecular Approach

Chemistry: Structure and Properties

Principles of Chemistry Molecular Approach

Chemistry: A Molecular Approach

Chemistry: A Molecular Approach

Principles of Chemistry: A Molecular Approach

Chemistry: The Central Science

Related questions

Weekly leaderboard