Answer:
0,07448M of phosphate buffer
Explanation:
sodium monohydrogenphosphate (Na₂HP) and sodium dihydrogenphosphate (NaH₂P) react with HCl thus:
Na₂HP + HCl ⇄ NaH₂P + NaCl <em>(1)</em>
NaH₂P + HCl ⇄ H₃P + NaCl <em>(2)</em>
The first endpoint is due the reaction (1), When all phosphate buffer is as NaH₂P form, begins the second reaction. That means that the second endpoint is due the total concentration of phosphate that is obtained thus:
0,01862L of HCl×= 1,862x10⁻³moles of HCl ≡ moles of phosphate buffer.
The concentration is:
= <em>0,07448M of phosphate buffer</em>
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I hope it helps!
The molecules are more loose and not as compact and bonded together by hydrogen bonds as solids. Liquid water also has an indefinite shape meaning it can shift into anything
<u>Answer:</u> The correct answer is Option c.
<u>Explanation:</u>
Weak acid is defined as the acid which does not get completely dissociated into its ions when dissolved in water. For Example: etc..
Strong acid is defined as the acid which gets completely dissociated into its ions when dissolved in water. For Example: etc..
Weak base is defined as the base which does not get completely dissociated into its ions when dissolved in water. For Example: etc..
Strong base is defined as the base which gets completely dissociated into its ions when dissolved in water. For Example: etc..
From the above information, it is clearly visible that the correct answer is Option c.
<span> A </span>catalyst<span> will </span>appear<span> in the steps of a </span>reaction<span> mechanism, but it will not </span>appear<span> in the overall </span><span>chemical reaction</span>