(B) The molarity $(M)$ of $Ca^{2+}$ is $0.0002 \ mol/L$.To convert molarity to $ppm$ $(mg/L)$,we use the formula: $ppm = \text{Molarity} \times \text{

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(B) The molarity $(M)$ of $Ca^{2+}$ is $0.0002 \ mol/L$.To convert molarity to $ppm$ $(mg/L)$,we use the formula: $ppm = \text{Molarity} \times \text{Molar Mass} \times 1000$.The molar mass of $Ca^{2+}$ is approximately $40 \ g/mol$.$ppm = 0.0002 \ mol/L \times 40 \ g/mol \times 1000 \ mg/g$.$ppm = 0.0002 \times 40000 = 8 \ ppm$.

Class 12 Chemistry Solutions Method of expressing concentration of solution

Medium

The concentration of $Ca^{2+}$ ions in a water sample is $0.0002 \ M$. What is the concentration of $Ca^{2+}$ in $ppm$ by weight-volume?

A
$4$
B
$8$
C
$0.4$
D
$0.08$

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Method of expressing concentration of solution

If the mole fraction of ethanol in a solution made by mixing $x \ g$ of water and $69 \ g$ of ethanol is $0.6$,then $x = \dots \dots \dots \dots$

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When $1.80 \ g$ of glucose is dissolved in $90 \ g$ of $H_2O$,the mole fraction of glucose is:

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Molarity of a solution prepared by dissolving $75.5 \ g$ of pure $KOH$ in $540 \ mL$ solution is .......... $M$

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What is the mole fraction of water in a spirit sample containing $92 \%$ ethyl alcohol by weight?

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$30 \ mL$ of $0.5 \ M$ $NaOH$ is diluted to $500 \ mL$ by adding water. What will be the molarity of the diluted solution (in $M$)?

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The concentration of $Ca^{2+}$ ions in a water sample is $0.0002 \ M$. What is the concentration of $Ca^{2+}$ in $ppm$ by weight-volume?

Similar Questions

If the mole fraction of ethanol in a solution made by mixing $x \ g$ of water and $69 \ g$ of ethanol is $0.6$,then $x = \dots \dots \dots \dots$

When $1.80 \ g$ of glucose is dissolved in $90 \ g$ of $H_2O$,the mole fraction of glucose is:

Molarity of a solution prepared by dissolving $75.5 \ g$ of pure $KOH$ in $540 \ mL$ solution is .......... $M$

What is the mole fraction of water in a spirit sample containing $92 \%$ ethyl alcohol by weight?

$30 \ mL$ of $0.5 \ M$ $NaOH$ is diluted to $500 \ mL$ by adding water. What will be the molarity of the diluted solution (in $M$)?

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