A cement compound CaO.Al2O3.10H2O gives certain peaks when using the powder diffraction method. The compound now increases its water of crystallization to become CaO.Al2O3.11H2O.Will the diffraction pattern obtained be basically the same as the former, with only a slight difference, which corresponds to a slight increase in the d spacing? Or will the diffraction pattern be an entirely different pattern?

It all depends upon how the water is bound. If the H2O molecules are a part of the crystalline structure, then adding an 11th H2O molecules COULD change the crystal strucure. In that case the powder diffraction pattern might be quite different. If, however, the H2O molecule just takes up more interstitial space then the pattern would have only slight differences in the d spacing. Without knowing which happens, I would make an educated guess that the latter is the case.

  1. 👍 0
  2. 👎 0
  3. 👁 37
asked by Bhupinder

Respond to this Question

First Name

Your Response

Similar Questions

  1. Science

    A Portland cement sample contained 20% SiO2 by weight derived from two silicate compounds. SiO2.2 CaO and SiO2. 3CaO that are present in the cement in the mole ratio 3:4. Determine the percent by weight of each silicate compound

    asked by Man Singh Chouhan on March 26, 2015
  2. Chem: x-ray

    Experiment to obtain the X-ray diffraction peaks of an unknown metal. Radiation is K_alpha from Cu. Through these diffraction peaks you wanted to determine: (a) whether the cell is SC, BCC, or FCC (b) the (hkl) value of the peaks

    asked by Anonymous on July 26, 2014
  3. chemistry

    Some properties of the two compounds are listed below: Melting point- Compound X= -114*C Compound Y= -138*C Boiling Point- Compound X= 78*C Compound Y= -22*C Net Dipole?- Compound X= Yes Compound Y= Yes Functional group: Compound

    asked by LeePyeonggang on February 10, 2010
  4. chemistry

    An orgnaic compound contains C, H, No, and O. Combustion of 0.1023 g of the compound in excess oxygen yielded 0.2766 g of CO2 and 0.991g of H2O. A asample of 0.4831 g of the compound was analyzed for nitrogen by the Dumas method.

    asked by kaliegh on December 9, 2007
  5. chemistry

    Which of the following describes the compound Mn(NO2)2? If the compound dissolved in water it would be a strong electrolyte. The compound is ionic. The compound would conduct electricity if molten. The compound is molecular. The

    asked by Jesus on February 18, 2009
  6. Chemistry

    I did the work, but I need help checking it... A compound contains 83.24% by mass carbon. Calculate the molar mass of the compound if it contains 5 moles of carbon per mole of compound. This was my process: I took 100g of compound

    asked by Kyle on January 26, 2012

    Underline each compound subject once and each compound predicate twice. Then write compound subject or compound predicate. 1. swimming and softball are two sports_ in the Olympic Games.= (COMPOUND SUBJECT) 2. The swimmer's_ skill

    asked by 3 GRADE on October 14, 2010
  8. chemistry

    Determine the percent yield for the following generic reaction using the information given below: Compound A --> Compound B if you start with 10.0 mL of Compound A and obtain 9.0 g of Compound B. Density of Compound A = 0.75 g/mL

    asked by Anonymous on April 30, 2015
  9. Chemistry

    A compound containing only C, H, and N yields the following data. (i) Complete combustion of 34.8 mg of the compound produced 33.3 mg of CO2 and 40.9 mg of H2O. (ii) A 66.3-mg sample of the compound was analyzed for nitrogen by

    asked by Darrel on November 20, 2012
  10. chemistry

    Which compound on the left, when dissolved in water, does not produce the corresponding compound(s) on the right? 1. CaO ! Ca(OH)2 2. SO2 ! H2SO4 3. NaH ! NaOH + H2 4. N2O5 ! HNO3 5. Cl2O7 ! HClO4

    asked by cheri on October 1, 2012

More Similar Questions