Chemistry, 18.07.2019 00:30 njones58emailtjcedu

Hcl + naoh → nacl + h2o 1. if 30g of hcl is reacted with excess naoh, and 10g of nacl is produced, what is the theoretical yield of the experiment? 2. if 30 g of hcl is reacted with excess naoh, and 10 g of nacl is produced, what is the percent yield of the experiment?

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Answers

HCl + NaOH = NaCl +H2O
Question 1
if 30g of HCl is reacted with excess NaOH and 10g of NaCl is produced.The theoretical yield of experiment is 48.08 g

calculation
find the moles of HCl used= mass / molar mas

= 30 g/36.5 = 0.8219 moles

by use of mole ratio between HCl to NaCl which is 1:1 the moles of NaCl is = 0.8219 moles

therefore the theoretical mass of NaCl = moles x molar mass of NaCl

= 0.8219 moles x 58.5 g/mol = 48.08 grams

Question 2

The % mass = 20.8%

calculation

% mass = actual yield / theoretical yield x 100

actual yield = 10 g
theoretical yield = 48.08 g

% yield is therefore = 10 g/ 48.08 g x100 = 20.8%

Answer from: xojade

Answer 1:
The reaction involved in present case is
HCl + NaOH → NaCl + H2O
In present case, it can be seen that 1 mole of HCl reacts with 1 mole of NaOH to give 1 mole of NaCl and H2O.

We know that, number of mole = weight of substance (g)/molecular weight

For HCl, number of mole = 30/36.5 = 0.8219
For NaOH, number of mole that can be produced = 0.8219

Thus, theoretical yield of NaOH = number of mole X Molecular weigh
= 0.8219 X 58.5
= 48.08 g.

Theoretical yield of the experiment is 48.08 g.
.......................................................................................................................
Answer 2:
Percent yield is mathematically expressed as,
$\frac{\text{Actual Yeild}}{\text{Theoretical Yield}} X 100$

In present case, Actual Yield = 10 g
Theoretical Yield = 48.08 g.

Therefore, Percent yield = $\frac{\text{10}}{\text{48.08}} X 100$
= 20.79%

Thus, percent yield of the experiment is 20.79 %

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Neither model is able to show the reactivity of potassium.

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Sorry i dont understand the question can you rephase it?

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Hcl + naoh → nacl + h2o 1. if 30g of hcl is reacted with excess naoh, and 10g of nacl is produced, w...

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