使用流表青圆转建等斗定们用What is the pH of the buffer 0.10M Na2HPO4/0.10M KH2PO4 (H3PO4pKa1=2.16
Sodium polyphosphate is a type of sodium phosphate and a salt of sodium ion andphosphate. This type of salt is formed upon heating mixtures of NaH2PO4 and Na2HPO4. This induces a condensation reaction. Thereafter, the specific polyphosphate is generated depending on the details of the heat...
What is the name of the covalent compound whose chemical formula is H2S? A compound is found to contain 23.3% magnesium, 30.7% sulfur, and 46.0% oxygen. (a) What is the empirical formula of this compound? (b) What is the molecular formula?
Write the formula of the conjugate base for acid H_3PO_4 and what is the name of the base? For hydrofluoric acid, identify the charges on the cation and anion. Find the conjugate acid of h_2po_4. H_3po_4 H_2po_4 Which of the following combinations would be the best cho...
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百度试题 结果1 题目What is the pH of the buffer 0.10M Na2HPO4/0.10M KH2PO4 (H3PO4pKa1=2.16 pKa2=7.21 pKa3=12.32) A 2.16 B 7.21 C 12.32 D 4.68 相关知识点: 试题来源: 解析 B 反馈 收藏
A chemical formula is a way of presenting information about the elemental composition of a compound. A chemical formula should include the symbol of the element that is present in the compound, as well as the number of atoms of said elem...
Give the name of the acid H2CO3. 2.16�x10-2 mol H2CO3 What are the products formed when an acid acts on metal carbonates? What are the products of an acid-base reaction? What is the conjugate base of carbonic acid, H2CO3? Which of the following is not a Bronsted-Lowry acid?
To write a chemical formula based on the name of a compound, we need to first identify the symbols of elements and polyatomic ions, then exchange the charge of elements/ions and put them as subscripts of the chemical species. We ...
What is the name of the compound or compounds that precipitate? In which one of the following aqueous solutions would you expect PbCl_2 to have the lowest solubility? a. 0.020 M BaCl_2 b. 0.015 M PbNO_3 c. pure water d. 0.015 ...