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2 years ago

The equivalence point occurs when [H+] = [OH-]. True False

Chemistry

1 answer:

Wittaler [7]2 years ago

7 0

Answer: -

True

Explanation: -

The equivalence point in a titration is the point when both the acid and base have been completely consumed.

Total amount of acid present = [H⁺ ]

Total amount of base present = [OH⁻ ]

Thus at equivalence point,

total amount of base should be equal to total amount of acid.

[H⁺] = [OH⁻]

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Answer:

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2 years ago

Please help, with step by step work

natali 33 [55]

$\qquad$ ☀️ $\pink{\bf{ {Answer = \: \: 85.57g }}}$

Molar mass of $\bf Cu_2O$

$\qquad$ $\twoheadrightarrow\sf 63.546 \times 2 +16$

$\qquad$ $\pink{\twoheadrightarrow\bf 143.092 g}$

<u>As we know</u>–

1 mol = $\bf 6.02×10^{23}$ formula units

1 mol $\bf Cu_2O$ = 143.092 g = $\bf 6.02×10^{23}$ formula units

Henceforth –

$\bf 3.60×10^{23}$ formula units $\bf Cu_2O$ –

$\qquad$ $\sf :\implies \dfrac{143.092 \times3.60×10^{23 }}{6.02×10^{23}}$

$\qquad$ $\sf :\implies \dfrac{143.092 \times3.60×\cancel{10^{23 }}}{6.02×\cancel{10^{23}}}$

$\qquad$ $\pink{:\implies\bf 85.57 g}$

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2 years ago

How many molecules in a mole?

Dennis_Churaev [7]

Answer:

One mole of a substance is equal to 6.022 × 10²³ units of that substance (such as atoms, molecules, or ions). The number 6.022 × 10²³ is known as Avogadro's number or Avogadro's constant.

Explanation:

hope this helped!

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2 years ago

What element glows in sign's when excited

ser-zykov [4K]

Answer:

The element that glows in signs is xenon.

Explanation:

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3 years ago